Cold morning man

It was the horse trails for Tuesday, looks like 5:30am rides are in and I am ready. I began under a bright moon and love riding without lights as when I start is just barely enough to see and then ride into sun rise. I was riding and debated turning around to grab my jacket and gloves. I thought for sure it wouldn't be that bad, it was..... I froze by butt off for 30 minutes and warmed up very slowly, I am not sure how I was so cold, might have been humidity or my body, still great ride!