Reflexology or mage question?

My friend was telling me that since I give my girlfriend foot mages a lot of the times that I should look into reflexology because their are sensual parts on all womens feet as well as mens feet that have a sensual effect on all parts of the body, such as relaxation, excitement, even ual arousal. Is their truth to this and if so how do I know exactly what I'm doing during a foot mage? My friend said some women even get off ually on foot mages, which I find hard to believe, but OK. Lol. Anyways is any of that true and if so where can I find out more about that?