I am 41, new-ish to exercise and have just completed the Couch to 5k. I've really enjoyed it and intend on keeping it up, but the last few runs have been a real slog, to the point where I feel I'm going backwards: legs are heavy, no energy afterwards, a bit grumpy.
I don't feel I'm over-doing it (3 x 30 minute runs per week) but my body is trying to tell me something. Not sure whether I need to repeat some of the earlier weeks to help my body recover a bit.
Any advice gratefully received as I'm really not sure how to approach this. Thanks!