I am in my late forties, 1 stone overweight, reasonably healthy (apart from high blood pressure controlled by meds) although physically not fit or active enough.
I don't know what's happened to me: I managed to get this far, done the week's 6, run 2 (10 minutes twice with walking interval) (only just!)... but when I tried the much dreaded 25 minutes I struggled so much, even getting through the first 3 minutes! I was really struggling, feeling I could barely lift my feet off the ground on each step! Seemed such a disproportionate effort! My legs felt a bit tired, middle of the calve particularly. I stopped running, brisk walked instead for a bit, hoping to turn it around, then attempted again with an even slower run interval, but ended up giving up again. It felt a failure... I don't feel able to overcome that hurdle!
Help! Am I just terrified of the idea of no walking intervals any more? Or are my legs truly needing a rest and have shut down in protest?