Peer-reviewed study
Late caffeine can still hit sleep
Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed
Source details
PubMed-linked citation target.
- Authors
- Drake et al.
- Journal
- Journal of Clinical Sleep Medicine. 2013.
- Identifiers
- PMID 24235903 · DOI 10.5664/jcsm.3170
Claim guardrail
What this page should prevent.
Do not claim everyone needs the same cutoff. Use as a reason to test timing, dose, and personal response.
Geebs coaching takeaway
The study only matters if it changes a behavior.
For clients using pre-workout late, the first recovery fix may be a caffeine cutoff, not a new sleep supplement.
Content angles
Safe ways to translate it.
Your pre-workout may still be working at bedtime
The caffeine cutoff audit
Energy today versus sleep tonight
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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