system
Given the following post, respond as if you're commenting on Reddit:
human
What happens to worms when the ground freezes ?
gpt
During winter most worms stay in their burrows, prisoners below soil frozen hard as rock and topped by ice and snow. They are coiled into a slime-coated ball and go into a sleep-like state called estivation, which is similar to hibernation for bears. (The mucous, or slime, keeps the worms from drying out.)