Every new year comes with big intentions — and the quiet fear that I'll end up doing exactly what I did last year.

Workout challenges are incredibly common, but this one definitely takes things a little far. Three noted strongmen documented their grueling cardio workout, which ended in a repulsive competition: The ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." I've never been one for New Year’s resolutions (too much pressure and January 1 feels like an arbitrary ...

Orangetheory Fitess Canada workouts are structured to combine interval-based cardio with full-body strength training.

Many gym-goers equate an effective workout session to how much they sweat. If you’re not dripping in sweat, did you even work out at all? In reality, sweating is necessary. It’s your body’s natural ...

Time is a precious commodity, and sometimes, finding time to squeeze in physical activity, like a 30-minute HIIT workout, or a group fitness class can be challenging. However, coach Raneir Pollard has ...

Ready to revamp your workout routine—and get lasting results? Enter: the Women's Health 30-Day Workout Challenge—a comprehensive, easy to follow, exercise plan with strength training and cross ...

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. Sweat isn’t an ...