Green Tea Extract
With the potential to protect against muscle damage, green tea extract can enhance your body’s antioxidant status and reduce oxidative stress. Individually, these ingredients may carry little to no effect on exercise performance, but together, may boost your workout performance. Since pre-workouts usually contain proprietary blends (which are partially disclosed amounts of ingredients), it can be difficult to prove their efficacy and indicate their value, says Cristie Besu, a certified sports nutritionist and founder of Eat Me Guilt Free. However, most blends contain caffeine, a stimulant that can enhance both physical and mental performance, and amino acids, which can reduce the likelihood of delayed onset muscle soreness (DOMS), says Besu.