Eli5: how do heating pads work? For instance, when you have a sore back and you stick something like “therma care” on your back for eight hours.

Question

Eli5: how do heating pads work? For instance, when you have a sore back and you stick something like “therma care” on your back for eight hours.

In: Other

Answer 1

Apply heat to sore mussels and the blood vessels will open nice and wide.
This will not only get you healed up faster but alleviate pain in the area because of the increased blood flow