Warming the Can of PolyU up before using w/brush?

Do you think this is a good idea? I find if slightly too cold (20-25C) it doesn't flow easy & behaves more like stiff goo rather than thin water. I think 30-32 degrees C would mean the brush results would be at their best. And probably the the room temp at 20C. Would this warmth have any negative effects on the clear itself?

thanks