Thanks shwanko07, some great nuggets in there that I hadn't picked up on in my 6 seasons.
I still train hard though, haven't had that much trouble with injuries but that is probably down to me not training more than 2-3 players at a time and not using the medpacks for players who I have decent cover for.

I usually train as much as I can as soon as the league games are done when I'm knocked out of the Cup. Think that's why my team stagnated a bit last season since I stayed in the cup for it's entirety.