This 25-minute full-body workout combines dumbbell strength training with cardio intervals for an efficient, high-energy session. Designed for intermediate and advanced levels, it targets muscle ...

It's incredibly important for midlife women to do cardio.

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 ...

Ever walked into the gym, made a beeline for the rowing machines (maybe all the treadmills were taken?), plonked yourself down and then kind of... not really been sure what to do next? We hear ya! But ...