Serotonin is one of the many neurotransmitters in your body responsible for mood, appetite and general well being. It’s more commonly known as the “happiness hormone”. if i ever get a tattoo i want this serotonin
50 things you don't need to know, but should read anyways because it's kind of crazy and awesome and it will make you a better nerd! XD and will probably gross you out too. Never eating chocolate bars again.