C4 is a pre-workout powder that energizes your workouts and takes your fitness to the next level. C4’s high-powered formula features a special blend of patented ingredients that put the edge in energy and performance.* When to take C4: You need energy You want to have a great workout You want to push yourself to reach new goals Why C4? The C4 formula includes ingredients that help promote energy, pumps and performance.* TeaCor for improved energy that comes on quickly and lasts longer.* Beta Alanine: An amino acid that supports muscular endurance. Beta Alanine produces a tingly sensation throughout the body that lets you know it's working.