Add Yahoo as a preferred source to see more of our stories on Google. A man performing a dumbbell hammer curl in a gym. If you ask someone to "make a muscle", they'll invariably raise their arm and ...

Biceps tendonitis is an inflammation or irritation of the upper biceps tendon. The upper biceps tendon is also called the long head of the biceps tendon. This strong, cord-like structure connects the ...

SANTA CLARA – Last week, I showed a rotator cuff activation exercise which received a lot of feedback. I also received some suggestions via Twitter, and one of them was the inspiration for the post ...

Add Yahoo as a preferred source to see more of our stories on Google. We spoke to the eminent Joe Thornton, fitness manager and elite personal trainer at Third Space London, to give us all the intel ...

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. Curls are the classic ...