system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the tip of your finger hurt after you cut the nail too short?
gpt
The skin under your nail has lots of nerve endings in it, just like the rest of your hands. These nerve endings are not used to being touched because normally they have a nail covering them up, so they are pretty sensitive. When you cut the nail too short you reveal the sensitive skin and it hurts.