We all know when it comes to running, nothing brings more enjoyment than hitting a new PB; whether you’re shedding off a simple second, or a few, it can transform a good run into a great run. But as ...

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. For strong, powerful ...

The hamstrings are the large muscles located at the back of your legs, behind the thighs. They are recruited in almost all of our daily activities from walking to bending down to standing up from the ...

Consider hitting an unassisted full range of motion rep to be the holy grail of hamstring training. The hamstrings are my favorite muscle group. Hands down. Maybe it's because it's my biggest and best ...