Bliss Whistle

With the Bliss Whistle, you blow two separate chambers with one breath, producing two notes that are close together in pitch to create a beat, which stimulates the cranium and vibrates sympathetically the glands inside the brain that produce cerebrospinal fluid, and endogenous opioids.  The effect is blissful, and draws attention upward toward the top of your head.   The experience can be quite profound, so please ask permission from those close by you, so they do not become alarmed.