Hi, I'm considering training for a marathon. I was wondering what other runners do about the sun exposure. I have read that many run in the early morning or evening, but that doesn't work for my long runs. I've been looking at protective clothing and some seems helpful. Do other people use that or not? And has anyone tried running with the protective masks? Seems to me anything that covers the face would just get hot and stuffy and make running more difficult. Just wondering what other people do.