system
Given the following post, respond as if you're commenting on Reddit:
human
Why does the hair on our heads and faces continue to grow unabated, while our body hair essentially grows to a certain length and then stops?
gpt
Facial hair does not actually grow forever. Every male has a terminal length of facial hair. For some it may only be a quarter inch, for others it may be many feet. But eventually, it stops and will not grow any longer.