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Why do I get so hungry after I exercise?
Asked by anonymous on Jul 16, 2008 in Weight Loss

After a 3-5 mile run or after the gym, I am always hungry and I am not sure why it happens. Is it because I have burned that many calories and my body is trying to recover? I carry some healthy food with me for after any exercise, so I won't eat everything in sight.


You are hungry after exercise because you burned the carbohydrate stored in your muscles and liver and it needs to be replaced. You also need protein to build and repair normal muscle damage that occurs during exercise. Within 60 minutes of completing your exercise program, you have a window of opportunity to eat a meal that contains carbohydrate and protein, and fat if you’d like. Research shows that people who eat within that window burn calories and lose weight more effectively than those who don’t. Eat something more substantial than just a small snack. Read about the post-exercise meal from the Guide to Sports Medicine on

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