Hi there, Just returned from a refreshing but exhausting one hour ride ;-). If I don't do my rides regularly lets say - each other day; I use to struggle a bit. This Xmas I had way too much food I guess... What I did note was that the usual headwind was quite cold. It helped that I pushed myself to the utmost and I was sweating like a pig. I am now wearing a mesh sweat shirt, a Craft undershirt and a jacket. I have a second undershirt available; would it be wise to wear that over the other undershirt? Or better go shopping for a fleece 2nd layer instead to fight the cold?