Bliss sound library
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Delta (0.5–4 Hz) and theta (4–8 Hz) waves are associated with deep relaxation and meditative states. Listening to sounds that induce these frequencies helps your brain shift into a state of relaxation and reduce stress by reducing cortisol levels. These frequencies help activate the parasympathetic nervous system, which is responsible for the “rest and digest” response. This promotes relaxation and counters the “fight or flight” stress response, helping you to unwind.