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 ...

Estimates suggest there are more than 650 skeletal muscles in the human body. Muscles perform a variety of functions that are essential to life. Skeletal muscles are attached to bones via tendons 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 ...

ACTUALLY CO-FOUNDED STUBHUB, BUT LEFT BEFORE IT WAS SOLD TO EBAY FOR 300 $10 MILLION -- $310 MILLION IN 2007. >> 5 ON YOUR HEALTH, IT SOUNDS TOO GOOD TO BE TRUE. GETTING TONED WITHOUT HITTING THE GYM.

The concept of "toning" is a myth — the "toned" look really means having muscle, and low enough body fat to see that definition. It's understandable to be nervous about gaining weight after you've ...