The word pranayama in Sanskrit is divided into two parts; "prana" which means life-force or the vitality you receive from the air you breathe, and "yama" which means to expand. So pranayama techniques are designed to help expand your vitality for optimal health.
Brahmari Pranayama is a wonderful technique to help soothe the central nervous system when feelings of anxiety and stress are at play. Try a few rounds of this powerful technique to see for yourself. Benefits include: improved focus, memory, and self-awareness, lowers blood pressure, stress, and exhaustion, beneficial in cases of sleeplessness, helps control migraine headaches and it can provide a soothing effect on nerves.