I love working out, and a good workout challenge is even better. When I had the opportunity to try model Alexis Ren's viral ...

Transform your abs with this expert-designed 10-minute weighted workout. Learn 5 effective exercises that build a stronger ...

This 8-minute intense ab workout can be done daily for 14 days ... but if you’re more advanced, this one includes double-leg toe taps and boat holds to work all of the muscles in your midsection.

You can train your abs likeOlympic gymnasts Simone Biles and Jordan Chiles using this gymnastics core workout.

As a fitness editor, I’m no stranger to an ab challenge, but this seven-minute workout really challenged my midsection. I felt my deep abdominal muscles (the transverse abdominis) switch on almost ...

The best part of flutter kicks is you don't need any equipment to work all those muscles. All you have to do is lie on the floor, lift your legs to a forty-five-degree angle, and then "flutter" them ...

Advanced workout Complete the beginner workout, plus two to four sets of these exercises, again with a 30-second break between each set.

But these traditional exercises aren’t the only way to get stronger. Enter: this standing ab workout that trains muscles you might have overlooked, while turning up the stability test.

Too many ab workouts could be making belly fat worse instead of better. Why overtraining your core can lead to weight gain ...

That’s why Alison Staples, run coach at Run to the Finish and physical therapy assistant, developed this unique 10-minute abs workout just for runners. It includes a 360-degree approach to core ...

what muscles they work and why they should be a regular part of your workout regime. This week: butterfly crunches. A great example is the butterfly crunches, which turn the ab-burning dial up on ...