According to Osho, the rising shout of Yaa-Hoo is a purposeful sound that, when done with total intensity and one-pointed urgency, pierces the center like a sword and drops you into soundless silence. It’s not a mantra but a device; from that deep silence transformation unfolds. Thus, sound’s crescendo and the ensuing stillness are effective doors toward awakening.
Use a strong, wholehearted Yaa-Hoo to drop into deep quiet, and that quiet wakes you up inside.