Reduces pain through physical and mental relaxation. Improves blood flow and increases metabolism. lowers heart rate Improves the immune system. Reduces stress hormones and increases levels of relaxing neurotransmitters in the brain such as Serotonin and Dopamine. Massage also has a good effect on chronic pain, reduces anxiety and has been shown to improve sleep. It increases flexibility in muscles and tendons. Some research also shows a reduction in the frequency of migraine attacks.