With an electric blanket you also enjoy a good night's rest in the winter months. The blankets provide a preheated bed and help you fall asleep earlier. Most electric blankets serve as underblankets and place on your mattress or under a fitted sheet to warm up your bed properly. Here, some blankets are even provided with a foot heating zone in which the temperature can be controlled separately from the rest of the electric blanket. However, there are also electric blankets that you can use as a heat blanket on the couch. These are called electric upper signs.