锻炼有助于使你的身体足够强壮，以抵抗病毒。
Exercises will help make your body strong enough to resist (抵抗) the virus.
同样，如果一种植物或动物没有留下任何可以繁殖的后代，它就不能把所有的能量浪费在使自己变得更强壮上，因为这是最可能走向灭绝的方式。
Similarly, a plant or animal cannot squander all its energy on growing a big body if none would be left over for reproduction, for this is the surest way to extinction.
光着脚走路能够缓解由于穿鞋而给这些肌肉带来的紧绷状态，并使它们变得更加强壮和灵活。
Walking barefoot releases the tension from these muscles caused by the footwear and make them more strong and agile.
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