Lack of time is often the main reason people don’t exercise regularly. But a type of interval workout recently popularised by ...

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

I used to train with a group that spanned the spectrum from milers to marathoners, all at a similar competitive level. For large stretches of autumn and winter, we could all train together in some ...

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.

A new expert breakdown ranks the top workouts for sustainable fat loss — and the winning routine might surprise you.

Everything you need to know about high-intensity interval training to help you hit the ground running in 2026—including a low ...

You can be on the path to fitness with no equipment needed, in as little as 20 minutes, just two or three times per week – it sounds like the start of a late-night infomercial, but High Intensity ...

There may, however, be a shortcut. High-intensity interval training ( HIIT) promises to get you fit with just a few minutes ...

As HIIT's popularity soars, sprint interval training, or SIT, is doing its best to catch up. Can shorter, harder, faster deliver better results? As the popularity of HIIT continues to soar, sprint ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." RUNNERS CAN EASILY fall into a basic routine for their workouts: Lace up, hit the pavement, then cruise ...

Adding high‑intensity interval training to a lifestyle intervention enhances short‑term physical activity in children and ...

Jenny Hardman loves her daily workouts at Orangetheory and says she understands why they're USA Today's #1 Gym!