Not sure if this is just me, or there is a trick that I'm not aware of. Riding last night, when at a stop my glasses kept fogging up. I typically ride with my visor up and whenever I stopped the glasses would fog up. Once I took off they would unfog but sitting at a set of lights and taking off fogged up is not good. I have heard that there are sprays to assist in visits and glasses not fogging up. Any tips or suggestions?