Take the two legged version and just do it on one leg.
采用两腿模式，就用一条腿作这个动作。
In the leg, it can cause pain and muscle cramps, sometimes just from mild exercise.
在病变的下肢，有时轻微的运动也能引起疼痛和肌肉的痛性痉挛。
Don't "hang out" in your front leg, just resting on it.
不要把你的前腿“悬”起，仅仅是支撑它。
Don't "hang out" in your front leg, just resting on it.
不要把你的前腿“悬”起，仅仅是支撑它。
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