Sound and Sleep

Sleep is not silence

The brain processes sound throughout the night. The right kind of sound deepens sleep; the wrong kind fragments it.

What helps

• Pink noise masks sudden disruptions and has been shown in Frontiers in Human Neuroscience (2017) to enhance slow-wave sleep in older adults.

• Delta-range tones (0.5–4 Hz) encourage the brain's deepest restorative cycles.

• 432 Hz ambient pads lower pre-sleep heart rate, easing the transition into stage one.

What hurts

Lyrics. Sudden dynamic shifts. Anything that pulls the cortex back into language processing.

Keep it slow. Keep it consistent. Let the body do the rest.