A Spanish study, published in the International Journal of Sport Nutrition and Exercise Metabolism, found that athletes who consumed caffeine pre-excercise burned about 15% more calories post-excercise. The best results were obtained by consuming 4.5 mg of caffeine per kilogram of body weight. For a 150 pound woman that’s about 300 mg of caffeine, about the amount in 12 ounces of brewed coffee.
Coffee has long been thought of as a vice which few people were inclined to give up but it’s actually a superfood. If you exercise, caffeine can offer functional benefits for your workout.