Personal trainer Drew Manning wanted to better understand his overweight clients, so he stopped exercising and eating right for 6 months. See how this extreme experiment affected him both emotionally and physically. 

Click here to watch Part 1 of Drew Manning: From Fit to Fat.


Click here to watch Part 3 of Drew Manning: Fron Fit to Fat. 

Click here for a behind the scenes interview with Drew Manning

Q: I end up overeating because it makes me feel better and I never really get full. I'd like to lose weight but this makes it hard. Any suggestions?

A: Being persistently hungry can cause big trouble. So can overeating for comfort/pleasure. These two behaviors, say researchers from Baylor University's Children's Nutrition Research Center, are controlled deep within your brain by serotonin-producing neurons, but operate separately from each other — one in the hypothalamus, the other in the midbrain. They both can, however, end up fueling poor nutritional choices and obesity.

Eating for Hunger

When hunger is your motive for eating, the question is: "Does your body know when you've had enough?" Well, if you are overweight, obese or have diabetes you may develop leptin resistance and your "I am full" hormone, leptin, can't do its job. The hormone's signal to your hypothalamus is dampened, and you keep eating.

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