Climbing out of Manchester, towards Bury and Haslingdon was great, fast and into a head wind although I encountered every single traffic light on RED! As soon as I hit Rawtenstall thts when it all started to go wrong, a vicious circle. It was very cold exacerbated by the head wind (NE). My body did not like this one little bit, the sweat had made it worse and you can see my heart rate plummet. Heart rate struggled to get over 120 so I couldn't get my body warm, core temperature must have been very low, which in turn stopped my heart rate rising. Tail wind for the last part but couldn't do anything with it, just went with the flow and floated home unable to pedal.