A: Studies have also concluded that taking caffeine before exercise significantly increases resistance training capacity. It also increases skeletal muscle blood flow.

Muscle contraction requires energy to function, which comes from ATP. The only way to increase ATP levels in muscle cells is by breaking down glycogen stores and converting them into glucose for cellular respiration.

By allowing more oxygen into your muscle cells, caffeine helps deliver nutrients to keep them working longer, effectively boosting performance during workouts. 

Read more about the benefits of Caffeine and Drinking Coffee here.