Archaeologists have discovered that ancient temples (like the Hypogeum in Malta) were acoustically tuned to 110 Hz.
When you hum at this pitch, the activity in the language center of the brain decreases, effectively silencing the "internal monologue" and inducing a trance state.
Humming generates 15x more Nitric Oxide (NO) in the nasal cavity than silent breathing.
NO is a potent vasodilator (opens blood vessels) and has anti-viral/anti-bacterial properties. Chanting is literally a sanitation cycle for your respiratory system.
The Vagus Nerve passes through the vocal cords. The physical vibration of humming massages this nerve.
Result: Immediate shift from Sympathetic (Fight/Flight) to Parasympathetic (Rest/Digest) nervous system dominance.
1. Inhale deeply through the nose.
2. Keep teeth slightly apart, lips closed.
3. Match the pitch of the drone (Low A).
4. Focus on the vibration in the center of your chest.