Train in your target heart rate to burn more fat.

It’s important to note that before engaging in any exercise program you should be cleared for that activity by your doctor. Also, these calculations are designed for those who are considered physically fit. Lastly, the 70% figure, used in this example, is a heart rate level that will best help you to use fat as a fuel source and not burn muscle. If you were training to increase your time in a 5K, you would want to train at a greater intensity.

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