HIIT workouts can boost your metabolic rate (helping you burn more calories throughout the day). And science backs up this ...

Follow along with trainers Jacqueline Kasen and Gerren Liles in the workout video above, or if you're ready to HIIT it solo, read the instructions below for a self-guided workout.

Start getting stronger and sweat smarter with this fast-paced lower body bodyweight workout, which is part of the Women’s ...

A typical SIT workout begins with a five-minute light cardio warmup to condition muscles for activity, followed by a maximum ...

Discover how this comprehensive 7-day HIIT program maximizes fitness gains through expert-designed workouts and evidence-based recovery strategies.

IF YOU’RE LOOKING for a style of workout that will push you to your limits without needing to exercise for hours, you only need to understand one four-letter acronym: HIIT. The term stands for ...

Fitness experts weigh in on this type of exercise, which involves short time periods but promises big rewards.

If you think that you don’t have time to exercise, high-intensity interval training may be perfect for you. Getty Images What Is HIIT? High-intensity interval training — referred to as HIIT ...

Jumping out of bed and straight into a HIIT workout without food first could be a problem for performance and hormonal health. HIIT requires huge amounts of energy to get through powerful moves as ...

“They’re made for HIIT workouts, CrossFit, weight training and short running or jumping exercises.” To help you find the right pair of training shoes, I talked to experts about what to look ...

Callisthenics is a type of training where you do bodyweight exercises to build strength. It’s versatile, low cost, and easy ...