Chest day is sacred. But if you’re just benching and hoping for the best, you’re leaving serious gains on the table. Your chest is a complex group that responds differently depending on the angle, ...

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 ...

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 ...

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.

There’s a reason why international chest day is at the beginning of the training week and not the end, and it’s because this muscle takes center stage in the quest for strength. After all, who doesn’t ...