Optimum Nutrition Gold Standard Pre Workout Powder, Energy Drink with Creatine Monohydrate, Beta Alanine, Caffeine and Vitamin B Complex, Nutrition Supplement, Fruit Punch Flavour, 30 Servings, 330 g

Product Information

There are absolutely no calories, and the performance energy blend contains just citrulline, beta-alanine, and 150mg of caffeine.

If you have a low caffeine tolerance, opt for a pre-workout with a low caffeine dose or even a stimulant-free pre-workout, like Hydraulic Stim-Free Pre-Workout.However, be careful when taking this supplement if you're sensitive to caffeine since you might end up feeling jittery after.

A good pre-workout with no creatine will still give you an energy boost, support your body, and prevent muscle fatigue. If you’re taking something like Performance Lab Pre that is a stim-free blend, it’s useful to contain creatine because there are no compounds that may inhibit absorption and blunt the effects. The Stimulatory Matrix is simply caffeine and theacrine, which is similar to caffeine in its effects, and at only 222 mg, you’re going to have some energy, but there is no wow factor here [ 12]. One scoop is more than enough to have you destroying your workouts, but experienced stimulant users can go for two scoops of this potent supplement.

A study on creatine supplementation suggests that creatine has similar effects as caffeine in improving the sports performance of sleep-deprived athletes.