Even thirty minutes of evening screen light can slash melatonin and delay sleep. This guide explains why blue wavelengths plus doomscrolling create nights, then shares a simple digital sunset ritual: taper screens two hours before bed, enable night filters and dim lamps, charge phones outside the door, and replace scrolling with books or gentle stretches. Red shift apps and CBT-I tools help, but turning them off an hour early keeps the ritual clean and effective.
