This isn't totally anxiety related, but I thought some people here may know. 

I keep seeing people saying stuff like "this video gives me serotonin" or "chocolate makes me release so much serotonin". I've always thought short term happiness was caused by dopamine rushes, and serotonin was only related to things like self-pride and achievement.

So my question is, does music, food etc actually causes any effect related to serotonin or does it concern dopamine? Or both/neither? 

Thanks!!