If you're feeling sleepy, hold your breath for as long as you can and then release it.

箊如果觉得困倦，尽可能时间长地屏住呼吸，然后再呼气。

youdao

If you're feeling sleepy, hold your breath for as long as you can and then release it.

箊如果觉得困倦，尽可能时间长地屏住呼吸，然后再呼气。

youdao