I'm confused by training status. I'm training for a half marathon at the moment. Four runs a week plus a spin class puts me comfortably in the 'optimal' training range. I'm getting faster and feeling fitter, but my 'training status' seems to be stuck on 'unproductive' - or at least it has been for the last ~3 weeks.
What's the deal? Am I just being impatient? Is my feeling of getting fitter just an illusion?! Any tips/insights appreciated!