If you’ve ever done a high-intensity interval training (HIIT) workout, you know it’s no joke. Sprints, burpees, and jump squats-those short bursts of intense effort followed by brief recovery ...

High-intensity interval training is one of the best ways to pack a lot of exercise into a short period of time. HIIT workouts are so efficient because they alternate short bursts of very intense ...

For some people trying to lose weight, they might find that they've plateaued and wonder if there is anything they can add to their workout routine to jumpstart their metabolism. Enjoying a ...

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 ...

High intensity workouts are a great way to get in some fast exercise. Here’s one to get started with. High intensity workouts are a great way to get in some fast exercise. Here’s one to get started ...

High-intensity interval training (otherwise known as HIIT) may sound, well, intense. And it can be. But it can also be highly beneficial, including for women over 50. The training modality has other ...

Forbes contributors publish independent expert analyses and insights. AI researcher working with the UN and others to drive social change. Oct 20, 2025, 05:19am EDT A humorous animated brain character ...

Remember the buzzy boutique fitness classes that soared in the mid to late-2010s? There was a time when you couldn’t skim a stone down 23rd Street in Manhattan without it ricocheting off three ...

I recently decided to completely switch up my half marathon training. I swapped miles for time-based training runs, and because I’ve never been much for speedwork outside my high school cross-country ...

Sherri Gordon, CLC is a certified professional life coach, author, and journalist covering health and wellness, social issues, parenting, and mental health. She also has a certificate of completion ...