The Weight of my Interval Timer

Did four tready miles on Monday and did 3.1 outside yesterday. I decided that I wanted to try using my interval timer again once I take my first walk break. This resulted in a time yesterday of 37:12 and also resulted in much less misery on my part. I don't know what it is, but just having the small interval goal makes it somehow easier to keep going. So, I run about the first mile and a half, and then start my interval timer at 1W:3R.