Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. January 26, 2023 Add ...

Experts say the secret to feeling strong in the long term is to focus less on the size of a muscle and more on what it can ...

Muscle fatigue is a decreased ability to create force with your muscles. Electrolyte imbalance and overuse are some of the most common causes of muscle fatigue. Rest and massage are the best ways to ...

Muscle isn't the only thing that matters. Here's how you can tap your hidden potential—and bulletproof against injury.

Like all great villains, lactic acid has been misunderstood. We’ve been blaming it for the pain we suffer during intense exercise for more than two centuries. There’s nothing worse, we say, than the ...

These protein-packed plant-based meals passed the test with my skeptical trainer, and they'll fuel your gains without the bro ...

I've had uneven abs and glutes for years, and by that I mean there's a noticeable (at least to me) difference between the size and strength in the muscles on my right and left sides. It may not sound ...

12-minute bodyweight workout after 55, with exclusive quotes from certified trainer Michael Betts. Get the 6-move plan.

Massages feel good, but do they actually speed muscle recovery? Turns out, they do. Scientists applied precise, repeated forces to injured mouse leg muscles and found that they recovered stronger and ...