Even though my wakeup heart rate was 55 this morning, I was tired during my run. I ran/walked for 75 minutes (about 3.25 miles), going south from the East Pavilion in South Jordan and back. I ran for about 90 seconds and walked for about 30 seconds. After the first mile or so, I changed that to 70 seconds and 40 seconds. I walked a lot of the way back to my car, and when I did run, my running was for less than a minute and my walking was for more than a minute. I've been sleeping well the past few nights, and my wakeup heart rate is slowly coming down. However, my energy level is low. Part of my problem this morning was that I skipped breakfast and didn't go running until noon.
We've had night-time lows in the mid 20s (F), but the daytime highs have been in the low 50s. There was a 5-10 mph head wind during the first half of my run, and that might have contributed to my being tired. I think, though, that the main reason for my being tired is the lack of sleep I had for a couple of weeks. The four or five nights of good sleep have brought my wakeup heart rate down, but my energy level has remained low.