Have you heard of fast-twitch and slow-twitch muscle fibers? These are the two types of muscle that are responsible for all your gains in the gym. And depending on how you train — and even your own genetics — you could be either slow or fast-twitch dominant. But how can you tell? Take our test to find out which muscle-fiber type you have more of. Plus, learn the best way to train for your type for better and faster muscle gains.
Take our test to find out if you're slow- or fast-twitch dominant (and how to maximize your training.)