Yesterday: had a friend over for dinner the previous night and then stayed up late installing a new thermostat (ecobee3, smart thermostat, at left - so awesome!) so I didn't even try to get up early to do my track workout. I was exhausted and needed the sleep. Plus my resting HR was up to 56...high for me...so I decided it was better to take it easy and take a day off.
Today: woke feeling good and went to do my 4x1km. Weather was good for the season at 3.9C (39F) and calm and partly cloudy. I saw a few snowflakes but I can't say that it was actually snowing much. It was too warm for it to stick anyway! After my warm-up of 1600m plus strides, I did the 4x1km. I felt good and strong on these, and was able to go a bit faster on each. I did them in 5:42.0, 5:40.2, 5:40.2, and 5:39.4. My HR was in the upper 160s at the end of each 1k, which seems appropriately hard, and my HR during the 2 min recovery period went down to the low 110s each time, which is also good and normal for me. So all seems well.
Hopefully I'll be good for my 20km tomorrow! It's supposed to get very cold tonight (27F) so I'll have to dress for the occasion. Oh yay...winter is coming :(.
Garmin data here.