To effectively use exercise for weight loss, it's crucial to exercise within your target heart rate zone. This zone ensures you're burning a significant amount of calories while also improving cardiovascular health. The most common method to estimate your maximum heart rate is the "220 minus your age" formula. Once you have your estimated maximum heart rate, you can then calculate your target heart rate zone, which is typically between 60% and 80% of your maximum heart rate for optimal fat burning and cardiovascular benefits.
function calculateTargetHeartRate() {
var age = document.getElementById("age").value;
var intensity = document.getElementById("weightLossIntensity").value;
var resultDiv = document.getElementById("result");
resultDiv.innerHTML = ""; // Clear previous results
if (isNaN(age) || age = 120) {
resultDiv.innerHTML = "Please enter a valid age.";
return;
}
// Calculate Maximum Heart Rate (MHR) using the 220-age formula
var maxHeartRate = 220 – age;
// Calculate Target Heart Rate based on intensity
var targetHeartRate = maxHeartRate * parseFloat(intensity);
resultDiv.innerHTML = "Your estimated Maximum Heart Rate is: " + maxHeartRate + " bpm.";
resultDiv.innerHTML += "For " + (parseFloat(intensity) * 100) + "% intensity, your target heart rate is: " + targetHeartRate.toFixed(0) + " bpm.";
}