Pose Method 8-mile run

My experiment continues... About 4 weeks ago I quit my old running stride cold turkey and started running using the Pose method. It was almost impossible at first. The first time I ran 3 miles I could hardly walk the next day. But I've stuck with it in hopes of increasing efficiency, decreasing the chance of injury, and better using my calf muscles on the run leg of triathlons.

Yesterday I did my first long run using Pose. I ran 8 miles at about an 8 min/mile pace. My heartrate was about 3 bpm below what it was for heel-strike running a month ago. So even though my body is still adapting to the new stride and I have not even begun the video analysis of my stride to make sure I'm really doing the Pose method properly, I've already seen an increase in efficiency. Four weeks ago I though the attemp was futile, but it appears to be working.

When I temporarily switch back to my old heel-striking form, it feels like I'm speed walking compared to my new stride.