I use one when I’m up north as its much colder there. You can regulate the temp on either side as my gf likes it hot
We got an amazing lightweight duvet as a present, its goose or something and is super warm. I never fall asleep with the blanket on as the heat is unbearable.
Yep, I use it to blast the bed before I get in and then switch it off before I go to sleep.
If I fall asleep reading and forget to turn it off I wake up in the middle of the night drenched in sweat.