[Oshin]

what's the best way to prevent goggles from fogging up? I was at grouse today and it was snowing pretty hard but I notice there some people don't get fogged up even in those condition, is there a technique or is it the brand of the goggle. I'm curious because I'm using a pair of Oakley A-frames. I know it gets fogged up when waters gets inside but shit is hella annoying, is not because I was touching my goggles is because of the snow dropping on top and starts melting and stuff.

P.S: what lens you guys use? and why? What are the best lens color for both night and sunny days.