因为它能增强我们全身的机能。

Because it can boost our whole body capaity.

youdao

请记住，通过扩大你的有氧能力，你也增强了你的身体输送氧气(能量和健康的源泉)到全身各个器官各个有机系统的能力。

Remember, by expanding your aerobic capacity, you're also expanding your body's ability to deliver oxygen (the source of energy and health) to every organ and system of the body.

youdao

游泳对于你的身心都有好处----不但可以增强你的心肺功能，还可以帮助你全身放松。

Swimming is good for your body and soul—it builds up your heart and lung, and helps you relax.

youdao