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.

This exercise improves stability and creates that coveted waist definition many seek. Proper form ensures maximum benefit while protecting your lower back. Your 20-minute session begins with a ...

The workout is broken down into eight rounds with 30-second work intervals for each exercise (two minutes in total) and a ...

No equipment (and very little space) necessary. Beginner workout Start with a few warm-up exercises, listed below. Do each one in order (which constitutes one set) and then repeat once more.

That’s because you can strengthen every muscle group in the body in just 20 to 30 minutes, and dumbbell workouts are easy to scale to your fitness level. You’ll build strength and fitness quickly and ...

If you have 20 minutes, you have all the time you need to level up your abs with this quick bodyweight workout, which is part of the Women’s Health+ Ultimate Abs Challenge. This week-long ...

Whether you’re a complete newbie to strength training or a diehard gym rat, this weight bench workout is ideal if you’ve got limited time as it targets your entire body using supersets.

That’s why I like this 20-minute workout from Viv Addo, one half of fitness duo Mr and Mrs Muscle. It doesn’t require any weights to do the session, and it is time-effective in that it ...

No problem! All you need is a yoga mat and 20 minutes to strengthen your core—no crunches required. This bodyweight flexion workout is designed to help you work on the foundational movement of ...

“We use EMS, electrical muscle stimulation, to create a 20-minute workout,” E20 Training co-founder and president Eloiza Tecson said. “By using this technology, it creates a more time ...