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Joan Beal, Singer: Breath Work

May 2, 2020

Scientific information on why breath exercises calm anxiety: 

Take a Deep Breath – The American Institute of Stress

Why Nitric Oxide Is So Important | Berkeley Wellness

Introduction to Nitric Oxide

Humming greatly increases nasal nitric oxide. – PubMed – NCBI

The Nobel Prize in Physiology or Medicine 1998 –

The Effect of Mirthful Laughter on the Human Cardiovascular System