Calming With Heated Mattress Pad . Heated mattress pads offer pain release from lower back, arthritis and other muscle or joint troubles. It is a lot healthier than having an electric blanket covering you. Technically speaking, heat always moves upwards, so it is better to have heat increase up starting with the lower part of your body to broaden to further areas, rather than have it blown away in the air. This way your bed would heat up in an efficient manner and manage that necessary warmth.