Many people have come to believe that sugar is one of the main culprits behind weight gain but this is not necessarily true. Sugar will raise insulin levels higher than complex carbohydrates which can be useful particularly around workout time. Raising insulin levels during training will decrease muscle tissue breakdown. For health reasons complex carbs are recommended for other times of the day. Here are some excellent food choices for carbohydrates:
This may explain why the fat-burning effects of eating more protein were confirmed in a study published in the American Journal of Physiology. One group was fed a high-protein diet (just over 1 gram per pound of body weight per day) while the second group consumed an amount closer to the lower recommendation of the RDA (recommended dietary allowance). The group eating the higher-protein diet burned the most fat.