system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we instinctively walk around, pace, or play with something while talking on the phone?
gpt
Your brain is wired to receive aural and visual stimuli during a conversation. Not being able to look at your conversation partner‘s face causes a slight apprehension, which you subconsciously ease by fidgeting/pacing/etc.