The strongest part of the original Drift Light concept was the routine cue. A lamp that fades down over a known window makes bedtime feel like a transition rather than a switch.
The exact number is less important than repeatability. A thirty-seven minute fade is long enough to feel different from normal evening light and short enough to fit into a real night.
Modern routines can use the same idea: one warm lamp, one phone boundary, one low-light finish and a consistent sleep target.
What to try tonight
- Choose one cue: light, screen boundary, temperature, humidity or airflow.
- Keep the sleep target and morning note simple.
- Repeat the change before judging it.






