KnitYourOwnSpaceship t1_j29r6jk wrote on December 30, 2022 at 5:54 PM

Reply to comment by SirDuke6 in ELI5: Why does putting one foot out from under the blankets bring so much relief of heat while laying in bed? by SirDuke6

I've sondered the same, and my theory is that you're also disturbing the air under the blanket when you move your foot. Sticking part of yourself outside the blanket gives the chance for colder air from the room to move under the blanket. It's not a complete change of all the trapped air, but enough to make a difference pretty quickly.

SirDuke6 OP t1_j2a3y4a wrote on December 30, 2022 at 7:14 PM

Makes sense, especially because if you were to lift your leg at all, the blanket rising would create a vaccuum that sucks in colder air.