It’s so bad in my house, my wife sleeps under at least 3, but oftentimes 4 or 5 blankets - blankets, mind you, not sheets, but thick blankets. I use 1 blanket, and sometimes that gets kicked off for half the night.
I sleep under a sheet only, and most times not even that, year round. Only thing that ever gets cold are my toes. Mr Kitty has to have a minimum of 2 blankets. My internal engine goes into overdrive when I’m sleeping.
My husband and I have the opposite problem, and I’ve always gotten hot more easily than my brother.