Every step you take during traditional cardio exercises could be slowly destroying your knees, hips, and ankles. The repetitive forward motion that defines most cardiovascular workouts creates a ...

I discovered spin classes a decade ago, and subsequently got certified to teach them myself. In the years since, I haven't focused on other kinds of cardio group classes—but for a time, I was obsessed ...

I have a strange question, but stay with me: Have you ever thought about how long you can run without breathing through your mouth? In a dark basement in central London I recently discovered that, for ...

Denise Austin regularly proves why so many women continue to look to her for easy, accessible, but meaningful workout tips. Now, the fitness icon is teaming up with her daughter, Katie Austin, 32, to ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...