A fitness coach reveals simple chair-based exercises that can safely strengthen your arms and improve daily function after 60 ...

Celebrities and fitness enthusiasts alike have rediscovered the transformative power of calisthenics—a training method that uses your own body weight as resistance. This ancient approach to fitness ...

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 ...