Peer-reviewed study
Restricting phone use before bed helped sleep
Effect of restricting bedtime mobile phone use on sleep, arousal, mood, and working memory: a randomized pilot trial
Source details
PubMed-linked citation target.
- Authors
- He et al.
- Journal
- PLOS ONE. 2020.
- Identifiers
- PMID 32040492 · DOI 10.1371/journal.pone.0228756
Claim guardrail
What this page should prevent.
Call it a pilot trial and avoid over-selling magnitude. The practical point is behavior design, not a universal cure.
Geebs coaching takeaway
The study only matters if it changes a behavior.
Give clients one concrete sleep behavior, not a 14-step protocol: phone away from bed for a fixed window.
Content angles
Safe ways to translate it.
The one sleep rule to test for seven nights
Better sleep without buying anything
Phone away, routine up
Exact answer pages
Questions that cite this source.
Caffeine and sleep answer
Does caffeine before bed hurt sleep?
Caffeine before bed can hurt sleep for enough people that it deserves a real audit, especially if late training, pre-workout, or afternoon coffee keeps showing up before bad sleep. The coaching move is not panic; it is testing timing, dose, and consistency.
Phone and sleep answer
Does using your phone in bed hurt sleep?
Phone use in bed is not neutral for many people. It can keep the brain engaged, expose you to light at the wrong time, and push sleep later. The useful coaching move is not a perfect evening routine; it is getting the phone out of the bed environment first.
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