system
Given the following post, respond as if you're commenting on Reddit:
human
How many calories are in poop vs how many calories we consume

Like if I consume a 400 Calorie Hershey bar, what will be the caloric amount of the poop? How many calories is an average human actually running on?
gpt
**Keep this serious, and on topic. Please only answer if you have a background in biological sciences that relate to this question or you have a very good sources answer that covers the dynamics of what the body absorbs and what it doesn't. Thank you!**