"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." All it takes is a tweak or two, and virtually any exercise for any muscle group can instantly become a ...

Don't just sit there! Try this amazing ab exercise. It's a one-minute challenge combining two classic core moves: the V-sit and the Russian twist. Trust us — you're going to love it. But if you hate ...

All it takes is a tweak or two, and virtually any exercise for any muscle group can instantly become a core movement as well. It's all about positioning. One great example of this is the V-sit ...

To chisel your abs and strengthen your core, add some dumbbells to your core workout. Adding some weight forces the fibers in ab muscles to activate more fully, making each rep more effective. This ...

Incorporating SIT sessions into your fitness routine can help boost your cardiovascular health and athletic ability. Emilija Manevska via Getty Images If you’ve dabbled in fitness in recent years, you ...

While sit-ups remain popular at gyms, on social media and in fitness workout plans, they could do more harm than good for some people. Your core was designed for more than just flexing and extending ...

Many of us assume we can’t build a stronger body or muscle using just our bodyweight, but this isn’t true. Sure, it may be quicker to use a pair of dumbbells or a barbell, as this will allow us to ...