Ursolic acid is a natural substance found in the peel of apples. A mouse study conducted at the University of Iowa and published in the journal PLoS ONE suggests that this compound can help increase muscle mass while boosting levels of brown fat. Both conditions are known to boost your calorie burning potential.
Mice fed a high-fat diet that included ursolic acid for several weeks gained less weight than unsupplemented fat-fed mice even though the supplemented group consumed more food. Since the activity levels of all mice were similar, muscle mass and brown fat proved to be a potent one-two punch for calorie burning. To discover the exercise performance benefits of another food compound, see today's Daily Fitness News.