Neurophysiology

Reference: 

Mishra R, Barlas C, Barone, D. (1993): Plasma beta-endorphin levels in humans: effect of Sahaja Yoga. Mishra R, Barlas C, Barone, D. (1993): plasma levels of beta-endorphin in humans: effects of Sahaja Yoga. Paper presented at the "Medical Aspects of Sahaja Yoga", Medical conference, held in Paper presented at "Medical Aspects of Sahaja Yoga," Medical Conference, held in New Delhi New Delhi India India, 1993, 1993.

Proving that the experience of meditation associated with the activation of the limbic brain. Several studies have shown changes in neurochemicals released by limbic brain regions and mediate positive emotions.
For example, a study conducted by Prof Ram Mishra at McMaster's University, in Toronto, shows that Meditation compared to rest lead to a significant increase of 70% on beta-endorphins were measured in the blood of men.
Beta-endorphins are neuro-hormones, endogenous opioids are released from the pituitary gland in the hypothalamus and has been associated with effecting positive feelings such as happiness and euphoria, also released during exercise, high performance, and when people are in love. They are thought to play an important role in homeostatic mechanisms, pain reduction and may even affect the immune system. A strengthening of the immune system through meditation can improve and cure serious diseases like cancer.