Like the ancient art of acupuncture, and its history with the Chinese, yoga stems from Hindu beliefs that began over five thousand years ago. It is a philosophy that aims to bring the person together within themselves into peace and happiness both on a physical and emotional level. These ancient forms of repairing yourself seem to be things that in recent years are getting a more serious appraisal from researchers and health care providers. The breathing exercises are said to be some of the best for those suffering from depression, as they are both calming and energizing. The feeling among those who use these techniques is that the breathing exercises cause the body to take in the oxygen better and to get rid of the carbon monoxide more completely. They believe that this improves the brain's activities including the releasing of natural feel good chemicals. These include oxytocin and endorphins.