system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: whether or not sleeping early and waking early is healthier than sleeping late and waking late is true and why?
gpt
There was a study not long ago in which they proved that it doesn't matter. Everyone's body has a different sleep pattern and it only becomes problematic when you disturb this natural pattern, for example if you're generally a late sleeper but are forced to wake up early. 
  
The important part is that you get enough sleep, hours wise. Whether that's from early to early or late to late doesn't matter.