Treadmill run: The unintentional interval run

At noon today I opted to run instead of lunch. To expedite matters, I ran on the treadmill instead of outside. It has been a long while since I ran inside or outside.

I started at a speed of 9.5, which translates to a pace of 6:12/km or so. Slower than a typical outdoor run, but fairly decent for the treadmill. I quickly realized that this was Too Fast and set it back to 9. I then realized that running at this or any other pace for more than a few minutes was lighting my calves and ankles on fire. I checked my BPM on the watch, and it was rocketing toward 170. I did not like this, so about 3-4 times when my heart rate started to climb, I dropped down to my walking pace of 6.5 and walked for a minute or so until my BPM settled.

Technically, then, this was not a 30-minute run but more like a 24- or 25-minute run. Still, I finished instead of just quitting and eating a giant pie. I consider this a good start to getting back into the run of things.

The stats:

Pace: 7:04/km
Speed: 9 (6:40/km) and 6.5 (9:13/km)
Time: 30:03
Distance: 4.25
Calories burned: 346
BPM: 158

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