system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do bugs like spiders just stand in one spot for long periods of times.

Like the spider on my wall who hasn't moved in 30 minutes.
gpt
It's probably just trying to conserve energy. It doesn't get anything out of moving around if there's no food. Out in nature, it'd be easier to spot a bug that is constantly moving around, too, so it would be advantageous to stay still when not actively trying to find food. 

Additionally, if it's cold, bugs are less likely to be moving.