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. The upper back is an ...

Which back machines are best? There are many exercise machines designed to work the neck, arms and upper back, but there is one piece of equipment that focuses on your lower core muscles — a back ...

If you have yet to experience back pain, the odds are sadly stacked against you. According to World Health Organization data, most people will experience low back pain at some point in their lives.

Yoga is a natural and gentle way to build upper body strength without heavy gym equipment. It uses body weight and controlled movements to strengthen muscles while also improving flexibility and ...

Whether you've been diagnosed with arthritis or you're an athlete who frequently pushes your physical limits, muscle pain is just that — a pain. It can inhibit a person's ability to recover and relax, ...

Men naturally lose muscle mass after 50, but strength training can slow that process. Experts share the 5 best exercises to ...

Like other parts of your body, your muscles change over the years. “As you age, your muscle fibers become less dense, which makes them less flexible and more prone to injury,” says Elizabeth Gardner, ...