Exercise and caffeine both have anti-cancer properties. Scientists at Rutgers University conducted research on animals exposed to UVB radiation and found caffeine and exercise combined increased the animals’ ability to destroy skin-cancer cells by up to four times. Researchers suspect caffeine inhibits the genetic pathway ATR-1, preventing damaged cells from self-destructing. Caffeine and exercise both decrease tissue fat, helping cells deconstruct. Monique Ryan, author of Sports Nutrition for Endurance Athletes, recommends drinking a cup of strong coffee an hour before training. The caffeine will also help delay fatigue and increase endurance for a better workout.