Optimum Nutrition Gold Standard Pre Workout Shot

Caffeine, one of the most popular pre-workout ingredients, is commonly found in tea and coffee and is proven to increase your endurance performance. To get the best results take 3 mg/kg bodyweight one hour prior to exercise but make sure you avoid other caffeine for at least 24 ...Caffeine, one of the most popular pre-workout ingredients, is commonly found in tea and coffee and is proven to increase your endurance performance. To get the best results take 3 mg/kg bodyweight one hour prior to exercise but make sure you avoid other caffeine for at least 24 hours beforehand.

Combined, the mental and physical benefits of caffeine give you the energy, focus and drive to succeed!