This Barry's Bootcamp-inspired HIIT ab workout take only 15 minutes to sculpt your core—all 360 degrees of obliques and more.

With any cardio exercise, 150 minutes a week is a great baseline, so you can break that up however you want. Dancing for about 30 minutes a day, five days a week, is optimal. It's also a good idea to ...

Join Class Fitsugar trainer Natalie White for a challenging HIIT core workout that's over and done with in just 10 minutes. All you need is a mat!

Usually the three-week mark is around the time I start to get a little bored with a challenge. Thankfully, the rest of me was ...

Ashley Joi brings the heat in this fiery abs and booty workout. This 30-minute class consists of four blocks packed with a variety of glute and abdominal exercises. Get your heart rate up as Joi ...

Jennifer Nied did trainer Jenna de León's 7-minute dumbbell abs workout every day as part of the 28-day challenge. There are ...

So when I had the opportunity to review the Women's Health Flex Challenge Abs Enthusiast track firsthand, I was immediately game. (The Flex Challenge is a customizable 28-day workout challenge ...

Jennifer Nied did trainer Jenna de León's 7-minute dumbbell abs workout every day as part of the 28-day challenge. There are her before-and-after results.