Training every set to failure sounds hardcore, but it may actually stall strength, recovery, and long-term muscle gains.

Add Yahoo as a preferred source to see more of our stories on Google. When it comes to building muscle—or any fitness routine, for that matter—most people assume that more is more. More sets, more ...

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 ...