(0.1 to 3.5 Hz deep sleep )
This is the slowest band of waves that our brains produce and they occur when we are in deep, dreamless sleep.
These waves are very beneficial for the body which restores and heals itself when in this state.
The delta state releases anti-aging hormones, including melatonin and DHEA. Human growth hormone (HGH) is another anti-aging hormone that is increased when delta brainwaves are occurring inside the brain, due to the stimulation of the pituitary gland.
HGH maintains the skin, bone density, cartilage, and the joints in your body as well as speeds up the healing process of joint and cartilage injuries. HGH can also help heal physical pain.
In healthy amounts, delta brainwaves can also cause a person to have an advanced state of empathy, understanding, and compassion for others.
Delta is the place of deepest relaxation, deepest healing, deepest spiritual connection and deepest connection with the subconscious mind. It is considered to be the gateway to the unconscious mind and the collective unconscious, bringing access to the universal psyche or mind.