One of the side effects of stimulants is diuresis. When the body is in an active state, it releases extra water stores. This is great for short term performance, but when doing long distance activities, the extra hydration can be critical towards the end of the race. So for long distance sports, it is more likely that any stimulant product such as coffee, energy drinks, or even Infinergii will decrease performance in the end. Infinergii is designed primarily for high intensity sports where the gameplay is made in short bursts and lasts no longer than 6 hours such as football, skateboarding, car racing, or surfing.