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. Your shoulders are an ...

A tri-set, explained personal trainer Jeff Dettelis of Southtowns Fitness Center, is three different exercises done in a row without rest in between. "Once you have completed the three exercises, you ...

Frank Zane's approach to bodybuilding was extremely meticulous – so much so that he earned the nickname 'The Chemist' during his career. At the peak of his powers in the late 1970s, Zane won three Mr ...