Your chest muscles aren’t just for looks—they power daily movements, protect your shoulders, and boost upper-body strength.

Building a strong, defined chest isn’t just about benching heavy—it’s about smart exercise selection, perfect form, and balanced programming. By targeting different angles, mastering pressing and fly ...

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 ...