动作要领
Lie face up, knees bent. Lift back off floor until torso is 45 degrees (don’t sit fully upright), return slowly.
动作要领
Lie face up, knees bent. Lift back off floor until torso is 45 degrees (don’t sit fully upright), return slowly.
小贴士
1. Keep abs under tension by not sitting all the way up.
2. Slow speed; feel the abs roll.
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