Side Jackknife
The Side Jackknife is a strength movement that targets your abdominals. Here's how to do it with clean form.
How to do the Side Jackknife
- Lie on your side with legs straight and bottom arm extended along the floor for balance.
- Simultaneously lift your top leg and crunch your torso toward it.
- Squeeze at the top, then lower both under control.
- Keep your core braced; don't let your hips rock backward.
Train it in Apex Zone
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