The trick of this action is flexion and extension movements should be done more slowly, so that the muscles an a relaxation, the long run, to achieve fitness results.

这个动作的窍门是，屈伸的动作应当做得缓慢些，让肌肉一张一弛，长此下去，才能达到健美的效果。

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Then, through the evaluation methods on physical exercise and the amount of exercise can be more effective to promote the club members to achieve optimal fitness results.

那么，通过对俱乐部会员运动量和运动方法的效果评价才能更有效地促进俱乐部会员能达到最佳的健身效果。

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