The 60/60 Rule

60% Volume / 60 Minutes

The delicate hair cells in your cochlea are like grass in a field. If you walk on them once, they pop back up. If you walk on them for hours every day (high volume), they eventually stay flat and die. Once they are gone, they never grow back.

The 60/60 rule ensures that the sound pressure level (SPL) stays below the threshold of metabolic exhaustion for your auditory nerves.