Pre-workout is a type of supplement that athletes use to enhance their performance and energy during exercise. Pre-workout usually contains ingredients such as caffeine, creatine, beta-alanine, L-carnitine, and branched-chain amino acids, which have different effects on the body. Some of the benefits of pre-workout are: - Increased endurance, coordination, strength, and power - Increased muscle mass and reduced body fat - Faster recovery and less muscle soreness