Sit-ups can be a great way to strengthen your abdominal muscles that sit around your stomach. But they can quickly get repetitive and its easy to accidentally lose your form, so when boredom strikes, ...

Those with flabby tummies have probably heard lots of tips about the perfect sit-up. A Medical College of Georgia study has determined that no sit-up is perfect for everyone – but there are lots of ...

Squats are hard enough on their own, and leaning against a wall may seem like it'll make it easier, but it makes it even more intense! These wall sit variations are meant to target your thighs, ...

Our fitness editor shows you wall sits that will make you feel the burn. But sometimes you need to shake up your routine a little bit, and that's where these variations come in. In the video above, ...

In the workout below, Tamir demonstrates different variations of the crunch and the sit-up, including how to do both traditional moves properly. He says practicing cross-body exercises like the ...

While typically filed under the “core move” category, sit-ups do more than fire up your midsection. “Sit-ups are more intense and target more muscles than a traditional crunch,” Alison Staples, coach ...