He didn't score 37 last year and he's getting older.
In terms of goals breakdown by period, I don't have the numbers per period, but his productivity plummeted as the season wore on.
Was he too busy working out to score goals? What's the spin?
So you are saying he was fit at 24, but his fitness declined through his mid twenties?
His shooting percentage halved in the second half of the season. If it had been career average, he'd have hit 30 goals. Shooting percentage fluctuations are bad luck or injuries, not fitness.