It's probably because of jet lag.

可能是时差的原因。

youdao

I woke up 4 am because of jet lag and shops were open.

我因为时差原因在凌晨4 点钟醒了，发现商铺居然还开着门。

youdao

But I also feel bad because of the lower pressure and the jet lag.

但是我还是因为低压和时差而感到难受。

youdao

But I also feel bad because of the lower pressure and the jet lag.

但是我还是因为低压和时差而感到难受。

youdao