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. Arm day can be one of ...

A tough arm day workout doesn’t have to be complicated to be effective. Sometimes all it takes is one tool: the almighty kettlebell. Unlike barbells and dumbbells, kettlebells force you to move with ...

Add Yahoo as a preferred source to see more of our stories on Google. Woman doing kettlebell workout. Looking for a full-body workout that doesn't require you to go to the gym? We've found a ...

I remember leaning against the wall of my old gym at the end of a long work week, moaning to a PT about how tight and uncomfortable my shoulders felt after hours at my desk. She nodded knowingly, as ...