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Blue Light Shutdown

High (89%) 1 min Evening Sleep

Dim screens and use warm lighting 60+ minutes before bed. Blue light suppresses melatonin by up to 50%.

Scientific Evidence

Study Type
Randomized Controlled Trial
Sample Size
n = 167
Institution
Harvard Medical School
Peer Reviewed
Yes
Origin: Circadian Biology / Sleep Medicine
89%
View research on PubMed →

How To Do It

  1. 1 Set a "screens dim" alarm for 60 min before your target bedtime
  2. 2 Enable Night Shift/Night Light on all devices
  3. 3 Switch room lighting to warm/dim (lamps, not overheads)
  4. 4 Avoid bright bathroom lights (use a nightlight)

Recommended For

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