Up to day 4..

I discovered something fun on my treadmill. I used the Heart Rate program.. I enter all that wonderful weight, age, time, etc.. Then it tells me to keep my heart rate at 122.

Day one.. was mostly learning the sequence.. 3 minute warm up, my set timing, then a 5 minute cool down. Spent maybe 5-10 minutes at 3.5 miles an hour, then had to bring it down to 3 miles an hour to keep my heart rate down.

Day two.. brought the speed up to 3.5 miles an hour and kept it there for 1/3 of the time, took it down to 3.2 for the next third and then down to 3 for the last third.

Both days, 50 minutes + "In Zone"