Why one foot (not both)?
Because it’s a perfect balance:
Enough cooling to help your body
Not so much that you feel cold or uncomfortable
Bonus effect:
Cooling your body also supports melatonin release, the hormone that helps regulate sleep. So that little habit can actually improve sleep quality, not just comfort.
Bottom line:
It’s not random at all—your body is quietly optimizing your temperature for sleep. A tiny, instinctive trick that actually works.
If you want, I can share a few other small “weird but effective” sleep habits like this that are backed by science.
