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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. The major muscle in ...

A top Equinox coach shares 5 dumbbell chest exercises that build real strength after 55, no machines required.

Developing bigger pectoral muscles, or "pecs," is one of the most common goals for anyone focused on building upper-body strength or improving their physique. After all, a strong, well-developed chest ...

Prolonged desk work can lead to musculoskeletal problems ranging from continual pain to injuries. This month, we launched a six-part series showing you how to stretch and strengthen your body to ...

Runners have a habit of prioritizing strength training from the waist down. It makes sense; we want to fortify the muscles that power our miles while protecting the joints that take the most pounding.

You don’t need an expensive gym membership or fancy machines to build muscle, improve endurance, and feel stronger.

"Push days" are a great way to divide your workouts, Chrissy Signore, a personal trainer, says. Signore says these exercises mostly train your chest, triceps, and shoulders. She especially recommends ...

Love them or hate them, push ups are a great exercise for strengthening your chest, shoulders, and even your back. If you fall into the latter category however, there’s good news — you can build your ...