"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." “Muscle stimulators are worth the investment if you’re looking to take your workouts to the next level, ...

This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Whether you’ve been lifting for years or ...

For the body to become stronger during strength training, muscles must be exposed to increasingly higher resistance to stimulate them. This is the only way they can grow. The best results are achieved ...