Hi Mike
I'm currently following a Pfitzinger and Douglas advanced marathon plan and it's got me doing a tempo run, speedwork, middle distance aerobic run, long run and recovery run every week. At the mo, I'm pretty tired, though I've got a recovery week next week (roll on!)
I'm wondering though, given that I do my long runs pretty much all year round along with 2 marathons, what on earth benefit can I get from the middle distance aerobic run? It's not exactly taxing me, so I can't see the benefit, surely a shorter recovery run would be better so I'll be fresher on the tempo/speed? I'm just doing it cos they tell me it'll do me good, increase my aerobic capacity, etc.
What are your thoughts on this?
Many thanks.