Nitric oxide (NO) is a crucial molecule for many processes in the body. It is particularly important for blood vessel and brain health. NO promotes a widening of blood vessels which increases blood flow, lowering blood pressure. Research has also shown NO to have antimicrobial and antiviral properties. To naturally increase NO, simply start humming. When we hum on the exhale of a breath, vibrations are generated in the sinuses which dramatically increases NO levels. Other options include eating more leafy greens such as Arugula and beets. Even though supplements are also available; nature provides the best way to get your nitric oxide.