Research has shown that this state of deep relaxation has a number of physical effects on the body. The heart rate and breathing slow. The reduction in gravity on the body causes the muscles to become very relaxed and electrical activity in the muscles decreases, allowing them to release tension. Blood flow to the muscles is also improved. All of this can lead to faster healing of injuries.
A number of changes also occur in the brain. Its electrical activity alters, with the brainwaves changing from beta to the alpha and theta waves that occur when we are very relaxed or drowsy. Endorphins, the body’s natural painkillers, are released. Also, the activity in the two hemispheres of the brain becomes more balanced as the left, or logical, side relaxes and reduces its activity, and the right, creative, side increases in activity.