Will a cot be colder sleeping?

Staying warm is all about limiting heat transfer.

Solids transfer heat much better than gases...

A pad on the ground has a direct link to the entire Earth to sink your heat away.
A cot puts a layer of air between those two.

I started using a cot a few years ago. As long as there isn't air flow (like sleeping under a tarp in a wind storm) a cot with a pad will always be warmer than the same pad on the ground.
 
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