Day 40 of fitness plan

I was supposed to do a 5-minute warm-up walk today followed by a 25-minute run, but I had to slow down and walk several times. I’m guessing maybe that the problem is that I waited until I got home from work today to go running, and I’m just tired from climbing the stairs at work repeatedly.

Weight:281.0 pounds

Exercise:Week 6 Day 3 of the couch-to-5k plan.