Humming is a gentle vocalization produced with the mouth closed, creating a soft resonance in the throat and nasal passages. It appears in musical warm-ups, meditative practices, and casual self-soothing behaviors. Because it is quiet and portable, humming can be done without special equipment, almost anywhere.
Many individuals use humming to bring attention to breathing rhythm and vibration. As with other self-regulation practices, comfort and context guide use - people often choose brief sessions and stop if they feel strained or lightheaded.