What it is
Regulatory status: environmental sleep practice
Mechanism evidence: human
At a glance
What it is, why people use it, the evidence, and what to know before trying it.
Why people use it
- Sleep comfort
- Reduced heat-related sleep disruption
Evidence at a glance
Avoiding excessive bedroom heat is biologically and observationally sensible. Evidence does not support one universal 65–68°F target, and trials of active bedding cooling have not consistently improved objective sleep outcomes.
Confidence: weak
Practice safety
Situations where this practice may need modification or professional guidance.
Avoid unsafe cold, especially for infants, frail adults or people with impaired thermoregulation. Shivering, discomfort or numbness indicates excessive cooling; room-temperature targets are not universal prescriptions.
Forms and variants
This review does not automatically apply to:
- active cooling mattresses
- cold exposure therapy
- ice baths
Seen in protocols
Public protocols that include Cool bedroom temperature. Open one to see the full context and source.