CortexLit

CortexLit tool · Sleep · Runs offline · No account

Bedtime Cooling Planner

Count back from your bedtime to schedule a warm shower and one room or bedding change, then print the sequence.

← Back to the article · See the evidence

This tool gives general information based on the research summarised in Bedroom Temperature and Sleep: What the Studies Actually Measured. It is not a medical device, does not diagnose, and does not replace advice from your clinician.

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Free (this page)
  • full countdown from your bedtime
  • shower and room-change sequence
  • text export and print
  • all citations and cautions


Plus (optional, one-time)
  • calendar (.ics) reminder export
  • unlimited share images
  • share card without the 'Made with CortexLit' footer


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Free tier: 1 share image per result.






Commercial disclosure: optional paid Plus tier; all evidence, cautions and the main result are free. No affiliate links, no sponsors.







What this is based on


Every output names at least one verified PubMed source. Identifiers were verified on 2026-10-11 in an earlier batch and carried over into this build; they were not re-queried here, and no retraction database was checked. Verification was at abstract level.


Haghayegh 2019
Haghayegh S, Khoshnevis S, Smolensky MH, et al. Before-bedtime passive body heating by warm shower or bath to improve sleep: A systematic review and meta-analysis. Sleep Med Rev. 2019;46:124-135. doi:10.1016/j.smrv.2019.04.008. PMID: 31102877.
PMID 31102877 · systematic review meta analysis · weight 1.0 · abstract level
Lan 2018
Lan L, Qian XL, Lian ZW, et al. Local body cooling to improve sleep quality and thermal comfort in a hot environment. Indoor Air. 2018;28(1):135-145. doi:10.1111/ina.12428. PMID: 28960513.
PMID 28960513 · randomized controlled trial · weight 0.8 · abstract level
Chen 2015
Chen XJ, Wang Y, Liu LL, et al. The effect of implementation intention on prospective memory: a systematic and meta-analytic review. Psychiatry Res. 2015;226(1):14-22. doi:10.1016/j.psychres.2015.01.011. PMID: 25639373.
PMID 25639373 · systematic review meta analysis · weight 1.0 · abstract level


Limits: This planner schedules times; it cannot predict how you will sleep. The review's authors note evidence on optimal timing and duration is scarce.







Privacy


Inputs stay in this page's memory. There is no telemetry, no analytics call and no network request. Saving is opt-in, local to this browser, deletable, and unencrypted.