Oxytocin is a powerful hormone. When we hug or kiss a loved one, oxytocin levels drive up. It also acts as a neurotransmitter in the brain. In fact, the hormone plays a huge role in pair bonding. This hormone is also greatly stimulated during sex, birth, breast feeding — the list goes on.
The first important finding is that 98% of the hundreds of people I have tested release oxytocin properly when they are trusted. The human oxytocin system motivates a desire to interact with others, and those whose brains release a spike of oxytocin reciprocate the trust they have been shown.