Caffeine, Exercise and Your Sleep: The Link Could be Sign. Different From What You Expect - Sleep Better W/ Caffeine?
Coffee and exercise both effect sleep, but their effects don't simply add up. The study at hand does yet suggest that your preworkout coffee won't ruin your sleep. I have to admit, the following are not results of peer-reviewed research, but with a 2x2 week design, participants being randomized to exercise (4 workouts per week) or be sedentary and to consume caffeine or placebo prior to exercise or rest, it looks methodologically complex, but sound and, more importantly, interesting enough to make it into the SuppVersity news ... I mean, it's about coffee ;-) With that being said, the scientists, who were hopefully less biased than I am, required their subjects to refrain from any extra regular physical activity and or coffee / caffeinated beverage consumption outside of the conditioning/treatment sessions, in which they didn't drink coffee, but 350-mL of Gatorade with or without a rel. low dose of 3mg/kg caffeine. You can learn more about coffee and caffeine...
