With so much focus on the upper body and core, it's easy to forget to tone your back muscles. After all, you want to look ...

All you need is 30 minutes to feel the burn.

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

In most workout splits, one to two dedicated leg days per week is common, but it really all depends on your fitness level and ...

Daily exercises to build muscle after 45, with expert coaching cues, to improve strength, balance, and muscle retention.

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. Most people will experience ...

Katrina Carter, DPT, FNS, is a licensed travel physical therapist. She specializes in orthopedics and has a passion for providing education on nutrition for healing and overall health and wellness.

The condition is hard to treat. But moving can help, if you do it right. Ask Well The condition is hard to treat. But moving can help, if you do it right. Credit...Joyce Lee for The New York Times ...