I have tricked a real live person to share a bed with me and they absorb my heat like a parasite.
Can you even still buy one in the states?
Haven't seen one in gawdz knows how long...
As for me, I'm one of those odd people that generate an exorbitant amount of body heat.. nothing more than a sheet and barely that at times.. otherwise it gets way too toasty.
The better-half and my cats don't complain though, seems *I'm* their proverbial water bottle