Add Yahoo as a preferred source to see more of our stories on Google. If you equate step aerobics with leg warmers and spandex, well, you're not wrong—but you're stuck in the 1980s version of it. As ...

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. So where should you ...

From machines to at-home HIIT, these workouts maximize calorie burn to help you lose weight and keep it off. Efficient, high-intensity, varied cardio burns more fat than steady-state, low-intensity ...

Gains are just around the corner.