what chemicals are gained from proper sleep for the brain
1 Serotonin is a chemical that affects mood, emotion, sleep and appetite. 2  Many antidepressants affect the amount of serotonin in the brain, and can also affect a personâs sleep.3  People beginning treatment with a new antidepressant may feel drowsier than usual for the first couple of weeks. Serotonin is a chemical that affects mood, emotion, sleep and appetite. 2  Many antidepressants affect the amount of serotonin in the brain, and can also affect a personâs sleep.