Sinner is as hardcore as you will find. It is designed to pack a knockout punch and keep you pushing your limits with one of the most powerful pre-workout formulas available. Every 2 scoop serving delivers a massive dose of Juglans Regia HCL, Rauwolscine, Caffeine, Beta-Alanine, Betaine, and Taurine, in addition to green tea and black pepper extract. The result is a product that will exceed your preconceptions of what a pre-workout supplement should be, and keep you amped and focused through the toughest of workouts. We suggest you start with just 1 scoop to test your tolerance for this pre-workout.