I don't think my body can get it to 100 degrees..I used a digital thermometer at 1 point and it said 97 degrees which I thought was wrong since I don't think my body can provide that much heat. I would like to add it would be in my groin area for at least 2-3 hrs since I travel to work and the rest of staff arrive later then I do..is it possible the longer I have it there, it can actually reach that high?? Thanks for the fast response guys. I really appreciate your help.