and we’ve thrown three of the best ab exercises into the mix to spice things up further. For each bodyweight exercise below, you’ll need to use your whole body to stabilize the ball ...

One in particular left its mark on me—the corkscrew exercise. It involved lying on ... would be better than hammering out dozens of sit-ups and crunches if your aim is to build functional ...

A sit-up exercise "involves your abdominals and hip ... sturdy such as a couch," according to Dr. Larson. "Placing a small ball or a couple of pillows behind the back can help to engage the ...

If this is you, try doing your sit-up on a large, inflatable stability ball. These are far softer ... Resistance-based exercise, whether bodyweight or using weights, can help avoid this.

Hold the slam ball above your chest with your arms fully extended ... Keep in mind, there’s a greater risk of injury with sit-ups: “The problem with sit-ups is that it’s very difficult to do the ...

Situps are a classic core exercise for ... lift your upper body up toward your thighs. Inhale as you slowly lower yourself back down to the floor. Using a stability ball can help to prevent ...

You sit in it, not on it,” Grace DeSimone ... In subsequent testing, I ended up inflating all seven exercise balls with a bike pump, using the inflation adapters provided with four of the ...