system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it that one feels more rested when sleeping earlier (11pm) than sleeping later (3am) despite the same hours of sleep (8hrs)?
gpt
This is almost certainly depending on your sleep cycle and whether you're a "night owl" rather than anything else.    
For example, I'd say that 3am to 11am is condiderably more restful than 11pm to 7am.   
Additionally, there might be external factors, such as street noise. You might not realise it, but traffic noise can disrupt your sleep even if you don't wake up.