Jonathan Goldman and wife Andi have written a guide to conscious humming with humming and breathing exercises. They explore the science behind sound, revealing how self-created sounds can rearrange molecular structure, and how humming not only helps with stress levels, sleep, and blood pressure, but also increases lymphatic circulation and melatonin production, releases endorphins, creates new neural pathways in the brain, and releases nitric oxide, a neurotransmitter fundamental to health and