Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

This advanced full body cardio HIIT workout delivers high-intensity training without the need for equipment. Designed to push ...

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 ...

If cardio seems more like a chore and less like a fun sweat session, this 10-minute HIIT workout can help you switch it up. Presented by Allegra, this high-energy routine is a quick way to get your ...

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 ...

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 ...

If you ask people why they do not exercise as much as they should, the most common answer is lack of time. The World Health Organisation recommends 75 minutes of high-intensity exercise, or 150 ...

High-intensity interval training (HIIT) is as popular as ever. Join the trend with these tips on what to wear, how to warm up, and more. No doubt you’ve heard the buzz about high-intensity interval ...

Like it of loathe it, high-intensity interval training (HIIT) is a key component of any decent training week. But how many of these sessions do runners need to do each week to get a meaningful aerobic ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...