Cycling to Lose Weight Calculator

Cycling to Lose Weight Calculator: Estimate Your Progress body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: #f8f9fa; color: #333; line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 960px; margin: 20px auto; padding: 20px; background-color: #ffffff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } h1, h2, h3 { color: #004a99; text-align: center; margin-bottom: 20px; } h1 { font-size: 2.5em; } h2 { font-size: 1.8em; margin-top: 30px; } h3 { font-size: 1.4em; margin-top: 20px; } .calculator-section { background-color: #eef2f6; padding: 30px; border-radius: 8px; margin-bottom: 30px; } .input-group { margin-bottom: 20px; display: flex; flex-direction: column; } .input-group label { font-weight: bold; margin-bottom: 8px; color: #004a99; } .input-group input[type="number"], .input-group input[type="range"], .input-group select { padding: 10px; border: 1px solid #ccc; border-radius: 5px; font-size: 1em; width: calc(100% – 20px); box-sizing: border-box; } .input-group input[type="number"]:focus, .input-group select:focus { border-color: #004a99; outline: none; box-shadow: 0 0 5px rgba(0, 74, 153, 0.5); } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; } .input-group .error-message { color: #dc3545; font-size: 0.85em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 25px; flex-wrap: wrap; gap: 10px; } .button-group button, .button-group input[type="button"] { padding: 12px 25px; border: none; border-radius: 5px; font-size: 1.1em; cursor: pointer; transition: background-color 0.3s ease; font-weight: bold; flex: 1; min-width: 180px; } .calculate-button { background-color: #004a99; color: white; } .calculate-button:hover { background-color: #003366; } .reset-button { background-color: #ffc107; color: #333; } .reset-button:hover { background-color: #e0a800; } .copy-button { background-color: #6c757d; color: white; } .copy-button:hover { background-color: #5a6268; } .results-section { margin-top: 30px; padding: 25px; background-color: #e9ecef; border-radius: 8px; text-align: center; border: 1px solid #dee2e6; } .primary-result { font-size: 2.5em; font-weight: bold; color: #28a745; margin-bottom: 15px; display: block; } .intermediate-results div { margin-bottom: 10px; font-size: 1.1em; } .intermediate-results strong { color: #004a99; } .formula-explanation { font-size: 0.9em; color: #666; margin-top: 15px; border-top: 1px dashed #ccc; padding-top: 15px; } table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 30px; } th, td { padding: 10px; border: 1px solid #ddd; text-align: left; } th { background-color: #004a99; color: white; } tr:nth-child(even) { background-color: #f2f2f2; } canvas { display: block; margin: 20px auto; max-width: 100%; } .chart-caption { font-size: 0.9em; color: #666; text-align: center; margin-top: 5px; } .article-section { margin-top: 40px; padding: 30px; background-color: #f8f9fa; border-radius: 8px; } .article-section h2, .article-section h3 { text-align: left; } .article-section p, .article-section ul, .article-section ol { margin-bottom: 20px; } .article-section ul, .article-section ol { padding-left: 25px; } .article-section li { margin-bottom: 10px; } .faq-item { margin-bottom: 15px; } .faq-question { font-weight: bold; color: #004a99; cursor: pointer; } .faq-answer { display: none; margin-top: 8px; padding-left: 15px; border-left: 2px solid #004a99; } .internal-links-section ul { list-style: none; padding: 0; } .internal-links-section li { margin-bottom: 15px; } .internal-links-section a { color: #004a99; text-decoration: none; font-weight: bold; } .internal-links-section a:hover { text-decoration: underline; } @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } h1 { font-size: 2em; } h2 { font-size: 1.5em; } .button-group button, .button-group input[type="button"] { min-width: 150px; padding: 10px 20px; } .primary-result { font-size: 2em; } }

Cycling to Lose Weight Calculator

Estimate your calorie burn and weight loss potential by cycling.

Calculate Your Cycling Weight Loss

Enter your weight in kilograms (kg).
Enter the duration in minutes.
Low (Relaxed pace, <10 mph) Moderate (Steady pace, 10-12 mph) High (Brisk pace, 12-14 mph) Very High (Challenging pace, >14 mph) Select the average intensity of your cycling session.
Stationary Bike Road Cycling Mountain Biking Choose the type of cycling you are doing.

Your Cycling Progress

Calories Burned: kcal
Estimated Weight Loss: kg
MET Value:

Formula Used: Calories Burned = (MET * Weight in kg * Duration in hours) * 1.05. Weight loss is estimated as Calories Burned / 7700 kcal per kg.

Assumptions: These calculations are estimates. Actual results may vary based on individual metabolism, terrain, wind resistance, and precise effort.

Calorie Burn Over Time by Intensity

Estimated Weight Loss Over 4 Weeks

Activity Frequency Calories Burned/Session Total Weekly Calories Estimated Weekly Weight Loss
1 Session/Week
3 Sessions/Week
5 Sessions/Week

Table shows estimates based on a 60-minute cycling session at moderate intensity for a 70kg individual.

What is Cycling to Lose Weight?

{primary_keyword} is a popular and effective method for individuals looking to reduce their body weight through physical activity. It involves using a bicycle, either outdoors or indoors on a stationary bike, as a primary means of increasing cardiovascular fitness and burning calories. This form of exercise is highly accessible, adaptable to various fitness levels, and can be incorporated into daily routines, making it a sustainable choice for long-term weight management. Unlike high-impact exercises, cycling is generally gentler on the joints, appealing to a broader demographic seeking a low-impact yet vigorous workout. Many people turn to cycling to lose weight because it allows for significant calorie expenditure while engaging major muscle groups in the legs and core.

Who should use it: Cycling to lose weight is suitable for almost anyone looking to shed pounds, improve cardiovascular health, and increase overall fitness. It's particularly beneficial for individuals who may find other forms of exercise too strenuous or uncomfortable due to joint issues. Beginners can start with shorter durations and lower intensities, gradually increasing as their fitness improves. Experienced cyclists can leverage higher intensities and longer rides for more significant calorie burn. People seeking a sustainable lifestyle change rather than a quick fix often find cycling to be an enjoyable and effective long-term solution. It's also a fantastic way to explore new environments, whether it's scenic country roads or challenging mountain trails.

Common misconceptions: A prevalent misconception is that cycling alone is sufficient for substantial weight loss without any dietary changes. While cycling burns a significant number of calories, achieving meaningful and sustainable weight loss typically requires a combination of increased physical activity and a balanced, calorie-controlled diet. Another myth is that cycling is only for people who want to build leg muscle; in reality, it's an excellent cardiovascular exercise that primarily targets fat loss. Some also believe that only outdoor cycling is effective, overlooking the significant benefits of stationary bikes for calorie burning and fitness, especially for those with time constraints or safety concerns.

{primary_keyword} Formula and Mathematical Explanation

Understanding the core formula behind {primary_keyword} helps in accurately estimating your progress and setting realistic goals. The primary calculation involves determining the total calories burned during a cycling session. This is typically based on the concept of Metabolic Equivalents (METs), which represent the energy expenditure of an activity relative to resting metabolic rate.

The Core Formula: Calorie Expenditure

The most common formula for calculating calorie expenditure during physical activity is:

Calories Burned = (MET × Body Weight in kg × Duration in hours) × 1.05

Variable Explanations

  • MET (Metabolic Equivalent of Task): This value represents the intensity of the activity. Different cycling intensities and types have different MET values. For instance, leisurely cycling might have a MET of 4, moderate cycling around 8, and vigorous cycling up to 10 or more.
  • Body Weight in kg: Your current body weight significantly influences the number of calories burned. Heavier individuals generally burn more calories performing the same activity for the same duration.
  • Duration in hours: The longer you cycle, the more calories you will burn. The formula requires the duration to be converted into hours.
  • 1.05: This is a conversion factor, sometimes incorporated into variations of the formula, to account for minor physiological efficiencies. Some sources might omit this or use slightly different factors.

Estimating Weight Loss

Once you have the total calories burned, you can estimate weight loss. A general rule of thumb is that approximately 7,700 kilocalories (kcal) need to be burned to lose 1 kilogram of body fat.

Estimated Weight Loss (kg) = Total Calories Burned / 7700

Variables Table

Variable Meaning Unit Typical Range
MET Metabolic Equivalent of Task, representing activity intensity Unitless ~4 (leisurely) to 16+ (very vigorous)
Body Weight Individual's mass Kilograms (kg) 30 – 150+ kg
Duration Time spent cycling Hours 0.5 – 5+ hours
Calories Burned Total energy expended during the activity Kilocalories (kcal) Varies widely based on inputs
Estimated Weight Loss Projected fat loss Kilograms (kg) Varies widely based on inputs

Practical Examples (Real-World Use Cases)

Let's explore how the {primary_keyword} calculator works with realistic scenarios.

Example 1: Weekend Warrior's Road Ride

Sarah is a 65kg woman who enjoys road cycling. On Saturday, she went for a 90-minute (1.5 hours) ride at a moderate pace (approximately 12 mph), which corresponds to a MET value of around 8.0 for road cycling.

Inputs:

  • Weight: 65 kg
  • Cycling Duration: 90 minutes (1.5 hours)
  • Intensity: Moderate (MET ~ 8.0 for road cycling)
  • Cycling Type: Road Cycling

Calculation:

  • Calories Burned = (8.0 METs × 65 kg × 1.5 hours) × 1.05 = 819 kcal
  • Estimated Weight Loss = 819 kcal / 7700 kcal/kg ≈ 0.106 kg

Output Interpretation: Sarah burned approximately 819 calories during her 90-minute road ride. If she maintains this consistent level of activity and diet, she could estimate a weight loss of about 0.1 kg from this single session. Over a week, cycling three times with similar efforts could contribute significantly to her weight loss goals.

Example 2: Commuter's Stationary Bike Session

Mark is aiming to lose weight and uses a stationary bike at home. He weighs 85kg and completes a 45-minute (0.75 hours) session at a vigorous intensity (MET value around 10.0 for stationary biking at high resistance).

Inputs:

  • Weight: 85 kg
  • Cycling Duration: 45 minutes (0.75 hours)
  • Intensity: Vigorous (MET ~ 10.0 for stationary bike)
  • Cycling Type: Stationary Bike

Calculation:

  • Calories Burned = (10.0 METs × 85 kg × 0.75 hours) × 1.05 = 892.5 kcal
  • Estimated Weight Loss = 892.5 kcal / 7700 kcal/kg ≈ 0.116 kg

Output Interpretation: Mark's 45-minute vigorous stationary bike session burned nearly 900 calories, contributing to an estimated weight loss of about 0.12 kg. Incorporating this daily or several times a week, alongside dietary adjustments, would accelerate his journey towards achieving his weight loss targets. This demonstrates how targeted exercise, even for shorter durations, can be highly effective when intensity is managed properly.

How to Use This {primary_keyword} Calculator

Our {primary_keyword} calculator is designed for simplicity and accuracy. Follow these steps to get your personalized weight loss estimates:

  1. Enter Your Weight: Input your current body weight in kilograms (kg) into the "Your Weight" field. Accurate weight is crucial for precise calorie burn calculations.
  2. Specify Cycling Duration: Enter the total time you plan to cycle, measured in minutes, into the "Cycling Duration" field.
  3. Select Intensity Level: Choose the intensity that best describes your typical cycling effort from the dropdown menu. Options range from 'Low' to 'Very High', each associated with different MET values.
  4. Choose Cycling Type: Select the type of cycling you are performing (Stationary, Road, or Mountain Biking). Different types have slightly different MET values for similar perceived efforts.
  5. Click 'Calculate': Once all fields are filled, click the "Calculate" button. The calculator will instantly display your estimated calories burned, potential weight loss, and the MET value used.
  6. Review Intermediate Results: Below the main result, you'll find breakdowns for calories burned, estimated weight loss in kg, and the MET value.
  7. Understand the Formula: A brief explanation of the calculation formula and key assumptions is provided for transparency.
  8. Use the Table and Chart: Explore the table and chart for further insights into how varying activity frequency and intensity can impact your results over time.
  9. Reset or Copy: Use the "Reset" button to clear the fields and start over with new inputs. The "Copy Results" button allows you to easily save or share your calculated estimates.

Decision-making guidance: Use these results to set achievable weekly calorie burn goals. For example, if your goal is to lose 0.5 kg per week, you'd aim to burn an additional 3,850 kcal (0.5 kg * 7700 kcal/kg) through cycling and diet combined. This calculator helps you understand how much cycling contributes to that goal.

Key Factors That Affect {primary_keyword} Results

While our calculator provides a solid estimate, several real-world factors can influence your actual calorie expenditure and weight loss from cycling. Understanding these can help you fine-tune your efforts and expectations.

  1. Individual Metabolism: Basal Metabolic Rate (BMR) varies significantly among individuals due to genetics, age, sex, and body composition. Someone with a higher BMR will burn more calories even at rest, and this difference often carries over into exercise.
  2. Cycling Efficiency and Technique: A more efficient cycling technique allows riders to produce more power for the same energy expenditure. Conversely, poor technique can lead to wasted energy.
  3. Terrain and Environmental Conditions: Cycling outdoors is affected by hills, wind resistance, and surface type. Uphill gradients and strong headwinds significantly increase the effort and calorie burn compared to flat terrain or tailwinds. Mountain biking involves navigating rough, uneven terrain, which demands more energy.
  4. Body Composition: The calculator uses total body weight. However, muscle tissue burns more calories than fat tissue, even at rest. Two individuals of the same weight might have different metabolic rates and calorie burns based on their muscle-to-fat ratio.
  5. Nutritional Intake and Hydration: What you eat before and after your ride impacts your energy levels and recovery. Proper hydration is essential for optimal performance; dehydration can reduce efficiency and increase perceived exertion.
  6. External Factors and Consistency: Factors like sleep quality, stress levels, and overall daily activity (Non-Exercise Activity Thermogenesis – NEAT) play a role in total energy balance. Consistent cycling over time yields better results than sporadic efforts.
  7. Pre-existing Health Conditions and Medications: Certain medical conditions or medications can affect metabolism and the body's response to exercise, potentially altering calorie burn rates.

Frequently Asked Questions (FAQ)

Q1: How many calories can I burn cycling per hour?

The number of calories burned cycling per hour varies greatly depending on your weight, the intensity of your ride, and the type of cycling. For example, a 70kg person cycling at a moderate pace (12-14 mph) for one hour might burn around 500-600 kcal. Vigorous cycling can burn upwards of 700-800+ kcal per hour. Our calculator provides a more personalized estimate.

Q2: Is stationary cycling or outdoor cycling better for weight loss?

Both are highly effective. Stationary cycling allows for precise control over intensity and duration, ensuring consistent calorie burn. Outdoor cycling offers the benefits of varied terrain, fresh air, and exploration, which can be more motivating for some. The key is consistency and achieving a calorie deficit, regardless of the setting.

Q3: How much weight can I lose cycling if I do it 3 times a week?

If you consistently burn an extra 500 kcal per session, three times a week, that's 1500 kcal burned weekly. To lose 1 kg of fat, you need to burn 7700 kcal. So, it would take approximately 5 weeks (7700 kcal / 1500 kcal/week) to lose 1 kg purely from this cycling activity, assuming no changes in diet. Remember to combine this with a balanced diet for optimal results.

Q4: What intensity level should I aim for on the calculator?

Choose the intensity that accurately reflects your perceived exertion and speed during your rides. 'Moderate' (10-12 mph) is a good target for sustained calorie burn without being overly taxing. 'High' or 'Very High' intensities burn more calories per minute but may not be sustainable for long durations. Be honest about your typical effort.

Q5: Does cycling build leg muscles?

Cycling primarily targets endurance and cardiovascular fitness. While it does engage and tone leg muscles (quadriceps, hamstrings, calves, glutes), it's not typically considered a primary muscle-building activity like weightlifting. The muscle development is usually lean rather than bulky.

Q6: Can I use cycling to lose weight if I am overweight?

Absolutely! Cycling is an excellent low-impact option for individuals carrying extra weight. Starting with lower intensity and shorter durations on a stationary bike or a comfortable road bike can be ideal. Gradually increasing duration and intensity as fitness improves is key. Always consult with a healthcare provider before starting a new exercise program, especially if you have underlying health conditions.

Q7: How does terrain affect calorie burn?

Hilly terrain and headwinds significantly increase the effort required to maintain a certain speed, thus boosting calorie burn compared to riding on flat ground with no wind. Mountain biking also involves more bursts of effort and engages stabilizing muscles more intensely.

Q8: What is a realistic weight loss goal when cycling?

A sustainable and healthy weight loss goal is typically 0.5 kg to 1 kg (about 1-2 lbs) per week. This requires a consistent calorie deficit of 500-1000 kcal per day, achieved through a combination of diet and exercise like cycling. Our calculator helps you quantify the exercise portion of this deficit.

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var weightInput = document.getElementById('weight'); var durationInput = document.getElementById('cyclingDuration'); var intensitySelect = document.getElementById('intensity'); var typeSelect = document.getElementById('cyclingType'); var weightError = document.getElementById('weightError'); var durationError = document.getElementById('cyclingDurationError'); var caloriesBurnedSpan = document.getElementById('caloriesBurned'); var estimatedWeightLossSpan = document.getElementById('estimatedWeightLoss'); var metValueSpan = document.getElementById('metValue'); var primaryResultSpan = document.querySelector('.primary-result'); var tblCalories1 = document.getElementById('tblCalories1'); var tblTotalCalories1 = document.getElementById('tblTotalCalories1'); var tblWeightLoss1 = document.getElementById('tblWeightLoss1'); var tblCalories3 = document.getElementById('tblCalories3'); var tblTotalCalories3 = document.getElementById('tblTotalCalories3'); var tblWeightLoss3 = document.getElementById('tblWeightLoss3'); var tblCalories5 = document.getElementById('tblCalories5'); var tblTotalCalories5 = document.getElementById('tblTotalCalories5'); var tblWeightLoss5 = document.getElementById('tblWeightLoss5'); var chart; var chartCtx; var MET_VALUES = { stationary: { 1: 4.0, 2: 7.0, 3: 10.0, 4: 12.0 }, // Low, Moderate, High, Very High road: { 1: 3.5, 2: 6.0, 3: 8.0, 4: 10.0 }, // Low, Moderate, High, Very High mountain: { 1: 5.0, 2: 8.0, 3: 11.0, 4: 14.0 } // Low, Moderate, High, Very High }; function validateInput(value, errorElement, min, max) { if (value === "") { errorElement.textContent = "This field cannot be empty."; errorElement.style.display = 'block'; return false; } var numValue = parseFloat(value); if (isNaN(numValue)) { errorElement.textContent = "Please enter a valid number."; errorElement.style.display = 'block'; return false; } if (numValue <= 0) { errorElement.textContent = "Please enter a positive value."; errorElement.style.display = 'block'; return false; } if (min !== undefined && numValue max) { errorElement.textContent = "Value too high."; errorElement.style.display = 'block'; return false; } errorElement.textContent = ""; errorElement.style.display = 'none'; return true; } function calculateWeightLoss() { var isValid = true; var weight = parseFloat(weightInput.value); if (!validateInput(weightInput.value, weightError, 1, 500)) { isValid = false; } var durationMinutes = parseFloat(durationInput.value); if (!validateInput(durationInput.value, durationError, 1, 1440)) { isValid = false; } // Max 24 hours if (!isValid) { resetResults(); return; } var intensityLevel = parseInt(intensitySelect.value); var cyclingType = typeSelect.value; var durationHours = durationMinutes / 60; var met = MET_VALUES[cyclingType] ? MET_VALUES[cyclingType][intensityLevel] : 8.0; // Default MET var caloriesBurned = (met * weight * durationHours) * 1.05; var estimatedWeightLossKg = caloriesBurned / 7700; primaryResultSpan.textContent = estimatedWeightLossKg.toFixed(3) + " kg"; caloriesBurnedSpan.textContent = caloriesBurned.toFixed(0); estimatedWeightLossSpan.textContent = estimatedWeightLossKg.toFixed(3); metValueSpan.textContent = met.toFixed(1); updateTableAndChart(weight, durationMinutes, met); } function resetResults() { primaryResultSpan.textContent = "–"; caloriesBurnedSpan.textContent = "–"; estimatedWeightLossSpan.textContent = "–"; metValueSpan.textContent = "–"; tblCalories1.textContent = "–"; tblTotalCalories1.textContent = "–"; tblWeightLoss1.textContent = "–"; tblCalories3.textContent = "–"; tblTotalCalories3.textContent = "–"; tblWeightLoss3.textContent = "–"; tblCalories5.textContent = "–"; tblTotalCalories5.textContent = "–"; tblWeightLoss5.textContent = "–"; } function resetCalculator() { weightInput.value = "70"; durationInput.value = "60"; intensitySelect.value = "2"; // Moderate typeSelect.value = "road"; weightError.textContent = ""; weightError.style.display = 'none'; durationError.textContent = ""; durationError.style.display = 'none'; calculateWeightLoss(); } function copyResults() { var primaryResult = primaryResultSpan.textContent; var calories = caloriesBurnedSpan.textContent; var weightLoss = estimatedWeightLossSpan.textContent; var met = metValueSpan.textContent; var assumptions = "Assumptions: MET value used, individual metabolism, terrain, wind, precise effort can vary results."; var textToCopy = "Cycling Weight Loss Results:\n"; textToCopy += "—————————–\n"; textToCopy += "Estimated Weight Loss: " + primaryResult + "\n"; textToCopy += "Calories Burned: " + calories + " kcal\n"; textToCopy += "MET Value Used: " + met + "\n"; textToCopy += "—————————–\n"; textToCopy += assumptions + "\n"; navigator.clipboard.writeText(textToCopy).then(function() { var originalText = document.querySelector('.copy-button').textContent; document.querySelector('.copy-button').textContent = 'Copied!'; setTimeout(function() { document.querySelector('.copy-button').textContent = originalText; }, 2000); }).catch(function(err) { console.error('Failed to copy text: ', err); alert('Failed to copy results. Please copy manually.'); }); } function updateTableAndChart(currentWeight, currentDurationMinutes, currentMet) { var fixedDurationHours = currentDurationMinutes / 60; // Use a fixed duration for table/chart consistency for now var fixedMet = MET_VALUES['road'][2]; // Moderate Road Cycling for table baseline // Table Calculations (using fixed 60 min, moderate road cycling for a 70kg person as per caption) var baseWeightForTable = 70; var baseDurationHours = 1; // 60 minutes var baseCaloriesSession = (fixedMet * baseWeightForTable * baseDurationHours) * 1.05; var baseWeightLossSession = baseCaloriesSession / 7700; var weeklyFrequency1 = 1; var weeklyFrequency3 = 3; var weeklyFrequency5 = 5; tblCalories1.textContent = baseCaloriesSession.toFixed(0) + " kcal"; tblTotalCalories1.textContent = (baseCaloriesSession * weeklyFrequency1).toFixed(0) + " kcal"; tblWeightLoss1.textContent = (baseWeightLossSession * weeklyFrequency1).toFixed(3) + " kg"; tblCalories3.textContent = baseCaloriesSession.toFixed(0) + " kcal"; tblTotalCalories3.textContent = (baseCaloriesSession * weeklyFrequency3).toFixed(0) + " kcal"; tblWeightLoss3.textContent = (baseWeightLossSession * weeklyFrequency3).toFixed(3) + " kg"; tblCalories5.textContent = baseCaloriesSession.toFixed(0) + " kcal"; tblTotalCalories5.textContent = (baseCaloriesSession * weeklyFrequency5).toFixed(0) + " kcal"; tblWeightLoss5.textContent = (baseWeightLossSession * weeklyFrequency5).toFixed(3) + " kg"; // Chart Data (Calorie Burn over time by intensity for a 70kg person) var timePoints = [30, 60, 90, 120]; // Minutes var lowIntensityBurn = []; var moderateIntensityBurn = []; var highIntensityBurn = []; for (var i = 0; i < timePoints.length; i++) { var durationHours = timePoints[i] / 60; lowIntensityBurn.push((MET_VALUES['road'][1] * 70 * durationHours) * 1.05); // MET 3.5 moderateIntensityBurn.push((MET_VALUES['road'][2] * 70 * durationHours) * 1.05); // MET 6.0 highIntensityBurn.push((MET_VALUES['road'][3] * 70 * durationHours) * 1.05); // MET 8.0 } if (chart) { chart.destroy(); } chartCtx = document.getElementById('cyclingChart').getContext('2d'); chart = new Chart(chartCtx, { type: 'line', data: { labels: timePoints.map(function(min) { return min + " min"; }), datasets: [{ label: 'Low Intensity (e.g., 10 mph)', data: lowIntensityBurn, borderColor: '#004a99', fill: false, tension: 0.1 }, { label: 'Moderate Intensity (e.g., 12 mph)', data: moderateIntensityBurn, borderColor: '#28a745', fill: false, tension: 0.1 }, { label: 'High Intensity (e.g., 14 mph)', data: highIntensityBurn, borderColor: '#ffc107', fill: false, tension: 0.1 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Calories Burned (kcal)' } }, x: { title: { display: true, text: 'Cycling Duration' } } }, plugins: { legend: { position: 'top', }, title: { display: true, text: 'Estimated Calorie Burn by Duration and Intensity (70kg person)' } } } }); } // Add event listeners for real-time updates weightInput.addEventListener('input', calculateWeightLoss); durationInput.addEventListener('input', calculateWeightLoss); intensitySelect.addEventListener('change', calculateWeightLoss); typeSelect.addEventListener('change', calculateWeightLoss); // Initialize calculator and chart on load document.addEventListener('DOMContentLoaded', function() { resetCalculator(); updateTableAndChart(parseFloat(weightInput.value), parseFloat(durationInput.value), MET_VALUES[typeSelect.value][parseInt(intensitySelect.value)]); }); // FAQ Accordion functionality var faqQuestions = document.querySelectorAll('.faq-question'); for (var i = 0; i < faqQuestions.length; i++) { faqQuestions[i].addEventListener('click', function() { var answer = this.nextElementSibling; if (answer.style.display === 'block') { answer.style.display = 'none'; } else { answer.style.display = 'block'; } }); }

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