The context of the following conversation is Austin worked night shift every night so in the morning Austin went to bed and spent all afternoon sleeping.:
Austin says I just woke up..
The friend responds Wow, it's four in the afternoon!.
Austin responds Yeah I work the night shift now so I have to sleep during the day..
The friend responds Wow that's got to be hard..
Austin responds It takes some getting used to, that's for sure. I get home around eight in the morning and usually sleep until three or four..
The friend responds I'm not sure I'd be able to do that. I need total darkness to sleep..