My inability to follow instructions

So, I was reading the Couch Potato Plan for week three. I just shoudn't have been doing that after driving through Wisconsin. I read "jog 90 seconds, walk 90 seconds, run three minutes, walk three minutes and repeat" and thought about it. I didn't re-check the instructions this morning which was my fatal flaw. I remembered 90-90-3-3-90-90-3-3 and I remembered repeat. So I did double what I was supposed to have done. I was really out of breath at the end and really relieved to learn it's becuase I'm an idiot and not because I'm out of shape.