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For some, 16-hour intermittent fasting or longer is optimal, while a 12-hour fasting window might be best for others.
Measuring your metabolism is the best way to figure out how long you should fast, and Lumen is the only tool available to help you do that.
For example, if you measure your metabolism after 12 hours of fasting and find you’re burning fats, try extending your fast and measuring your metabolism every 1-2 hours to determine what your mitochondria are burning for energy.
If you continue burning fat, this may indicate that your glycogen stores are emptying and your fast is effective. If you’ve shifted back to carb burn, then you’ve passed your fasting sweet spot. That’s a sign to end your fast and eat something nutritious. |