My kids are extremely lucky.  They didn't get my circulation or my lack of circulation.

It takes quite a bit for my kids to get cold.  None of them like to sleep with much more than a sheet and pajamas. 

When we had our first child we spent quite a bit of money on kids bedding, but for us it all went to waste.  They never use it.  If you cover them up, they kick off the covers in their sleep.

My wife and I get cold for no reason at all.  Its part of the reason why we moved to South Florida a few years back.  My kids apparently are tougher than the both of us put together.  I guess that is some strange type of synergy.