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Originally Posted by grumpy
what is a heating pad?
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A pad that heats up. Helpful eh?
There are types you microwave and they hold the heat for a little while.
There are types that are chemical based, you break the cell and it heats up for a couple hours.
There are electrical types that heat to a certain set temperature. Though even 105 to 110 can still burn you over a period of time, aka slow cooking. I use mine electrical one mostly to sit under a metal bowl to melt chocolate.
All types are normally used to ease pain, relax muscles, etc.