How many studies support Bedroom Temperature?

Sleep onset and maintenance are physiologically coupled to a decline in core body temperature and a rise in distal (hand/foot) skin temperature, a mechanism laid out in detail across several reviews of sleep thermoregulation and linked to insomnia, restless legs syndrome, and other sleep disorders when disrupted. That's backed by 8 published studies in Vitaebase's database, including 1 randomized controlled trial and 3 meta-analyses, the most recent from 2026 -- a fairly substantial body of research for a single topic.