With 7.6 million views on YouTube and the claim it’s the hardest abs workout ever in the title, I had to give this 9-minute ...

Core exercises can make everything easier. Whether or not you realise it, a strong core is essential for pretty much all your daily habits. 'You need your core to be solid to do literally ...

Erin Stern, a two-time Figure Olympia champion, broke down her calorie-burning back and abs workout for achieving a smaller ...

So, these are called flutter kicks. Then what we're going to do is ... You don't want to go too high because then you're not engaging your abs. You want to keep your feet down about 6 inches ...

In addition to working my mind and my abs, I was surprised to feel fatigue in other muscles, as well. With back-to-back flutter kicks and leg raising exercises, I felt the burn in my quads too.

Are you ready to get Hemsworth-worthy abs? Here’s what you need to do: Cross-body mountain climbers Kick sits Bicycle sit-ups Flutter kicks The not so great news is that you have to repeat this ...