What are the benefits of swimming?

问题描述:

What are the benefits of swimming?
如果可能的话,请用3~5个句子,不要太简单.感谢!

As we all know,swimming can strength our body,so we can be strong when suffer from illness.And it`s a good way to relax.Also in hot summer,swimming makes us cool.We can have fun when we swim with our ...