Chemical Phenylethylamine in chocolate to make chocolate sleepy sphere, so that helps sleep and if there is a high amount of cocoa will make feel happy.
Phenylethylamine compounds in chocolate can cause drowsiness. So chocolate is like a drug to help them sleep and if you have a high amount of cocoa it makes happy.
Phenylethylamine substances in chocolate makes you sleepy. So the chocolate is like a drug to sleep, and if there is a high amount of cocoa will feel happy.