It's important to stay hydrated.

保持水分很重要。

First and foremost: Stay hydrated.

首先就是保持水分。

A few important things I found were: -stay hydrated.

我发现有几个重要的事情是：-保持水分。

Remember to keep drinking water so you stay hydrated.

要记得经常喝水补充水分。

They need water to stay hydrated, and to stay in peak physical condition.

他们需要补充水分，需要保持身体的巅峰状态。