Entertaiment is one of the most important things in life. It can cause the brain to realease seratonin, dopamine and other chemicals which are very good for the body. It can also be very enjoyable if it hits on the social backstabbing, murders and other themes which are a natural part of our social world which the human brain was evolved to react deeply to. Entertaiment can be done at a personal level as with music and books, or at a larger scale as with performances adapted for an audience. It can be a mixture of fun and serious, such as satire or religious festivals.