It looks easy, but it's actually tough on the muscles and can lead to injuries in a hurry.

这看起来简单，但实际上会让肌肉很费力，还可能一下子使肌肉造成损伤。

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But if you understand what causes trauma to these areas, it's easy to adjust your practice to avoid or help heal injuries. Here's a primer on each.

如果你理解了损伤是如何造成的，那么通过调整当下的练习来预防或恢复已有损伤都不在话下。

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And injuries were very easy to happen.

而且受伤是很容易发生的。

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"Sadly though, if they are injured, it's not as easy for them to bounce back, to recover from their injuries, " he added.

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