第二，不能熟睡，睡眠和时间较少。

Second, not sleeping, sleep and le time.

youdao

因为熟睡需要良好同步性，睾丸激素水平的降低会大大地破坏了这种同步，所以有百分之二十的男子不能熟睡。

Because deep sleep requires great synchronisation, low levels of testosterone intensify the lack of synchronisation and can explain 20 per cent of men's inability to experience deep sleep.

youdao

在熟睡的时候，你并不能积极地应对炎热。

When you're asleep, you can't actively combat the heat.

youdao