November 19, 2013 Add as a preferred source on Google Add as a preferred source on Google We like interval training because you can pack a lot of effective exercise into a short amount of time. In ...

High-intensity interval training, or HIIT for short, continues to be one of the top fitness trends in the world. This super hard, super-effective style of training isn’t just the “it” workout of the ...

High-intensity interval training involves performing an all-out, exhaustive physical effort for a short time followed by a short (sometimes active) recovery. Its benefits are clear: Effective HIIT ...

If you want to become a fitter and faster runner, especially if you have a target race in mind, the best thing that you can do is select and follow a structured training plan that aligns with your ...

Runkeeper was placed on Earth by supreme beings of some sort. Its programmable, GPS-tracked interval runs make the iPhone into a serious, and entirely thoughtless, training tool. But Runkeeper’s ...

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 ...

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 ...