first comment to discuss the heating effect !! in fact I am setting myself obliged to go running and I put the belt. The phone rang and I remained seated a moment with the belt on the belly. Contrary to what is said in the first comment, here heater alone. Then tested in full jog (over an hour) here heater to burning but intermittently. It is unbearable but remains motivated !! after all this is what we ask for that belt! . it was the first use so for now no recoil on efficiency. To be continued ....
