In one of Grossman’s studies, older women who used a 10-minute HIIT workout three to five times a week for 16 weeksincreased muscle about 2.23 times faster than women doing long aerobic workouts.

10 min standing HIIT workout. For more workouts and programs, check out my app Supreme Court makes major announcement Sharon Stone on the Moment Robert De Niro ‘Crossed a Line' Filming ‘Casino ...

This 10-minute bodyweight HIIT workout with trainer Natalie White can be modified no matter your level, from beginner to advanced.

High-intensity interval training, aka HIIT, is one of the best ways to maximize your workout time. Burn a ton of calories and boost your metabolism in little time with celeb trainer Astrid McGuire ...

This 10-move HIIT sequence gives you a full metabolic workout in just under 10 minutes.

These 10-minute HIIT workout videos offer fast and effective exercises that don't require any equipment.

In just 10 minutes, you can burn some calories, get your heart pumping and muscles moving with this 10-move HIIT workout.

The Workout: Perform each exercise for 45 seconds, completing as many reps as possible, with no rest between moves. Rest one minute after finishing the circuit, then repeat one more time.

According to studies and a personal trainer, 10 minute HIIT workouts that are done 3 times a day are just as effective as a 1-hour jog.

What’s the best workout to do if I only have 10 minutes? So, yes, quick workouts really do make a difference, which leads us to the question of which workouts we should do given our time ...

This 10-minute bodyweight HIIT workout with trainer Natalie White can be modified no matter your level, from beginner to advanced.