Oxytocin is a hormone created in the hypothalamus in the brain and acts as a neurotransmitter. The release of oxytocin is usually triggered by petting animals, breastfeeding, labour, exercise, intimacy, sex, physical touch and much more. It creates a warm loving feeling and is partially responsible for a happy mood.
Higher levels of oxytocin has been known to create anti-stress effects on the body such as a reduction of cortisol levels and blood pressure. It can also promote growth, healing and positive social interactions.