regarding feeling cold - my best advice would be to keep consistent calorie intake. lots of calories are used up to propel the bike and not enough left to keep the body warm. this is especially noticeable from day two onwards. first night was the coldest in 2015, 10-11deg, but i didn't get too cold as i was munching energy bars whilst riding. second night was warmer, but i was getting colder than on the first one as i've run out of food, and my appetite wasn't that great to eat enough at controls.