Intermittent fasting helps with weight loss by extending the time your body has to burn through the calories from your last meal and start using stored fat as energy.
Fed State and Insulin
When you eat, your body digests and absorbs food over several hours, during which insulin levels rise. This insulin helps store excess energy in the form of glycogen and fat.
Fasting State and Energy Use
Once you enter the fasting state, your body is no longer digesting food. During this time, insulin levels drop, and your body begins to use stored energy.
Transition from Glycogen to Fat Burning
Typically, it takes about 7-10 hours after your last meal for your body to deplete its glycogen stores, at which point it starts burning fat for energy.
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