THE CHEST—AND the muscle-pumping workouts it encourages—takes up a great deal of attention for physique-minded guys. If you pause a moment to think about why, you won't need long to figure out the ...

The pallof press is the underrated anti-rotation exercise beating the plank for core activation. Learn proper form, key variations, and beginner tips.

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. It’s easy to almost ...

Leoni Jesner is a fitness, health, and lifestyle writer who has contributed to Byrdie and LIVESTRONG.com, among other publications. She is also a personal trainer, mat Pilates instructor, and ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. A strong back supports better ...