system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is it that gives us the feeling of sleeping on clean sheets?

Definitely a dumb question BUT, sleeping on fresh sheets is one of the most satisfying things. Why does it feel so nice?
gpt
The sheets smell like detergent rather than your own sweat and body oils. They also feel clean since detergent washes away your dead skin cells and body oils. They're a fresh canvas for you to make gross again.