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. I just learned that ...

Break a sweat, then you're done - that's how the 15-15-15 workout goes. At least that's what it feels like. This is the way to exercise for anyone who'd rather be doing anything else than a cardio ...

Plenty of research touts the importance of cardiorespiratory fitness (CRF)—also known as cardio fitness, cardiovascular endurance, and aerobic fitness—as a health marker, as well as an athletic ...

We all have days where making it to the gym just isn't on the table. But that doesn't mean exercise can't be. In fact, you can squeeze in a quick, effective workout from the comfort of your own home ...