4. The reverse curl 彎身仰舉

If you find sit-ups difficult try the reverse curl instead, it's just as effective but easier on the back. Start by lying on the floor, with your hands by your sides. Lift your bum off the floor using just your stomach muscles and keep your arms and shoulders on the floor. Hold for a few seconds then lower yourself back to the floor. Repeat 15-20 times.

如果你覺得做仰臥起坐有困難，那就改做彎身運動吧，這同樣有效，并且還更簡單易做。仰臥于地板上，把雙手放在身體兩側。只用你的腹部肌肉把臀部提起離開地面，同時要把雙臂和肩膀貼在地板上。保持這樣的姿勢幾秒鐘，然后輕輕把身體落回地面。這樣重復15-20分鐘。

來源:可可英語 http://www.ccdyzl.cn/read/201005/103973.shtml