Greetings all... When I pull a fairly good size/quality rubber band and then quickly hold it against my lips, I feel it to be quite hot. I assume that some of the energy used in stretching the rubber band is converted into heat by virtue of the properties of a "rubber band" My question is this: Is this energy "loss" appreciable? That is(speaking hypothetically), if I pull with 10 lbs of force, is 1 pound of force converted into heat? Or is this conversion a real but "negligible" factor(much less than 1-lb in my hypothetical scenario) Thank you.