system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When trying to regain balance, why do we lean towards the side that is off balance?

For example if you are walking on a curb and start tilting to the left, your body instinctively shifts weight towards the left.  Wouldn't it make more sense to shift weight to the right to counteract the difference in weight?
gpt
Your upper body/head/chest seem to move to the left; this is so that your hips/center of mass will move to the right. Your hips/waist/belly easily counteract the tilt. It is impossible, however, to move your waist to the right quickly without moving your upper body to the left. Does that make sense?