system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What happens in our brains when we hold in emotions and then snap?

I want to know if there are any chemicals or enzymes that release when you suppress emotion and what happens when we finally release it. And then why do we then resort to extreme sadness or anger?
gpt
Your front brain simulates consequences and chooses the best action to take. When you're emotional, this usually means stopping you from doing something like punting your co workers. Sometimes one or multiple emotions become really strong and it takes lots of effort to stop you from acting on them. Effort makes your brain tired, and either it becomes worse at modulating behavior OR the emotions become too strong for the front brain to hold back. Then you have an emotional outburst where the front brain is kinda offline.