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. Rest days are an ...
We all want simple workouts that deliver results, and that's why the 21-15-9 format has become a staple in high-intensity functional fitness. Originally a CrossFit workout, it involves completing one ...
Jyotika Saravanan, at the age of 46, sweated it out at the gym with intense, high-impact workouts. A clip showing her in action at the gym, capturing a wide variety of exercises, surfaced on social ...