For fitness-minded folks, muscle testing can sound pretty intriguing. But it turns out that it has little to do with fitness...or even muscles. On a basic level, muscle testing looks at a muscle and ...

Muscle tone after 55 doesn't disappear simply because your effort drops; it fades when movement quality and neural frequency decline. While traditional weight training builds raw strength, heavy lifts ...

While many people brush off walking as basic form of movement, for old people but it’s one of the most effective and underrated ways to stay fit. While it might not help you create the bulky muscle ...

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 word “toning” is ...