> A "warming sensation" is not what the OP has experienced. A warming sensation is the first thing OP noticed: "I took them off of my charger, put them on my h

> A "warming sensation" is not what the OP has experienced. A warming sensation is the first thing OP noticed: "I took them off of my charger, put them on my head, and noticed they were suddenly getting very warm". Taking them off at that point does remove _some_ of the risks.