"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 ...

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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images While classic core exercises like sit-ups, planks and crunches are ...

For those who live to sweat — but maybe want a chance to fully catch their breath — SIT is the new HIIT. HIIT, or high-intensity interval training, includes bursts (typically 30 seconds to a few ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a hard interval workout, and I’ll explain exactly how. But I also need to ...

This ridiculously hard L-sit exercise works your entire body without moving a muscle. These are the progressions you can use to get strong enough to do it. Everyone likes a good challenge. That’s why ...

When most people think of a strong core or achieving abs, the first exercise that comes to mind is often sit-ups. While sit-ups have long been a go-to for strengthening the core, they're not always ...