We're definitely fans of exercise snacking, but sometimes nothing but a long, sweaty workout will do — and if that's what you're craving, this 45-minute high-intensity interval training workout with ...

Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

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 ...

You’ve seen them at the gym – the cardio bunnies who spend hours on the treadmill but never touch a weight, and the muscle-obsessed lifters who break into a cold sweat at the mere mention of running.

In the fitness world, there are three types of people: those who love cardio, those who don’t, and those who also aren’t fans but choose to do it anyway. If I were going to put myself into a category, ...

Head to any step aerobics class and you may feel like the instructor is speaking another language. Don’t worry, we’ve all been there. But the good news is that most of the basic aerobic dance steps ...

Of all the fitness trends that defined the '80s, step aerobics ruled the home workout scene. While gym bros were busy pumping iron, this was the original way to “get your steps in.” Though step ...

View post: I'm a Cardiologist—This Is the Ideal Daily Step Count for Protecting Heart Health and Boosting Longevity After 50 Of all the fitness trends that defined the ’80s, step aerobics ruled the ...