I know this is going to sound strange and odd but I can't seem to fix this problem I am having when I roll. I just started taking jujisu a couple months ago and everything was going smoothly, but I noticed when I am rolling with the guys I get 'stimulated' very easily. I had this problem for a couple weeks and then I asked my professor and he told me to wear a cup. I tried that for a month now but the problem is still there. Does anyone have any advise? Is there some type of numbing cream I could use? It is especially troublesome when I am in half guard.