High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

Welcome to a high-energy ab workout that will leave you feeling strong and sculpted. High-intensity interval training (HIIT) is the perfect blend of cardio and strength training. When you focus on ...

Women-focused CoreWorx on the Kennett Square offers small-group strength classes with built-in coaching, Pilates to HIIT, ...

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. Sprint interval ...

Discover what one HIIT instructor got out of her 30-day yoga challenge results, including both physical and mental benefits. For someone who loves engaging in deep, audible sighs throughout the day, ...

A recent study from Australia suggests that high intensity interval training may be optimal for body composition in older adults, by helping to lose fat while preserving muscle.

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Doing HIIT workouts can improve your cardiovascular and ...

While the coronavirus (COVID-19) pandemic has halted the cadence of everyday life for just about everyone, the world is now beginning to adjust. We're all handling the challenges of social distancing ...