Add Yahoo as a preferred source to see more of our stories on Google. "If there's one thing that'll earn you respect in the gym, it’s a powerful, chiseled upper body—and that starts with your chest," ...

“Strength training is every runner’s secret weapon!” says Lindsey Clayton, senior instructor at Barry’s in New York City and co-founder of the Brave Body Project. “A balanced strength-training routine ...

STARTING A WORKOUT program for the first time can be equal parts excitement and confusion. The good news is it’s almost automatic that you’ll immediately begin to gain muscle as a beginner, no matter ...

This article was reviewed by Craig Primack, MD, FACP, FAAP, FOMA. “Right to the core,” “core values,” and “hardcore.” These little idioms highlight just how vital the concept of “core” is in our lives ...

It can be hard to carve out time in your busy schedule for strength training, especially if you’re a newbie and it feels overwhelming to get started—or you don’t even know where to start. That’s why ...

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. While plenty of ...

Carve out just nine minutes a day, five to six times a week, and watch how your core transforms.