Digital Sunset Protocol
Put every screen away for the last 90 minutes before bed and replace it with a printed book or light stretching — evening screen light suppresses melatonin and pushes the body clock later.
Put every screen away for the last 90 minutes before bed and replace it with a printed book or light stretching — evening screen light suppresses melatonin and pushes the body clock later.
Watch the 21-second version
No screens for the last ninety minutes before bed.
Transcript & sources → All videosMr. Age is AgeGen's editorial character. Facts come from the protocol above.
The practice
- Pick a bedtime and count back 90 minutes. That is when the screens go off: phone, tablet, laptop and TV.
- Give the phone a place to spend the night outside the bedroom, the same place every night.
- Fill the 90 minutes with something that has no screen: reading a printed book, or light stretching.
- Keep the room lighting dim for the same stretch of time.
Where it fits in a day
- The 90 minutes sit between two published recommendations: the NHLBI advises using the hour before bed for quiet time and avoiding bright light from a TV or computer screen; Harvard Health advises avoiding bright screens beginning two to three hours before bed.
- It is the screen half of a wider evening wind-down, and it works alongside dimmer, warmer light in the house after sunset.
- It costs no gadget — only a fixed place where the phone lives at night, every night of the week.
Why it works
- Light suppresses the secretion of melatonin, the hormone that influences circadian rhythms, and blue light at night does so more powerfully than other light, according to Harvard Health.
- In a Brigham and Women's Hospital study (Chang et al., PNAS 2015), 12 healthy young adults read for four hours before bed in dim room light for five nights. Reading on a light-emitting e-reader suppressed evening melatonin by about 55% compared with a printed book, which showed no suppression.
- The same e-reader evenings delayed melatonin onset by more than 1.5 hours, lengthened the time it took to fall asleep, and reduced alertness the next morning. A printed book is the swap the study itself tested.
Category
Sleep — a 90-minute evening window. Pairs naturally with a fixed wind-down routine and no overhead light after sunset.
Related protocols
Sources
- Chang et al., PNAS 2015 — Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness
- NHLBI — Healthy Sleep Habits
- Harvard Health — Blue light has a dark side
AgeGen mental-recovery practices are drawn from authoritative health agencies. We never claim therapeutic effects unsupported by the linked sources.
