Notes
83F 68%H 71DP, At the Collins Hill High School track after getting my car out of hock a bit after 1830 because of a battery problem. Did one warmup mile (forgetting to turn on my gps until 1/10 of a mile into the first lap) followed by three at around 10:45. 10:45 yesterday morning only got my HR up to 125, but in today's heat it pushed up much higher.
I had to use different kit because my running stuff was in the office. So, today I used my 310xt, and a soft strap HR monitor. It had a couple of small unnatural spikes which is why I always use the old HR strap.