It would figure.
I go the whole season--swimming, biking, running, doing yoga, lifting weights, trying Pilates, teaching cycling and water aerobics--without being overtrained.
I shift to a single-sport focus, and boom. Overtrained.
(Of course we all know that it's not really a single-sport focus; it's two simultaneous single-sport focuses!)
Actually, it might be a little bit deeper than overtraining. Physiologically, I'm having a little trouble; I'm achy in ways (and in places) I normally don't have trouble. But my resting heart rate is at 48 BPM (right where it should be), and I'm not having any trouble getting it up for workouts.
But I just don't want to train. I would rather stay at home and sleep, or play DDR. I haven't run in a week and a half, haven't swam in a week. I've been biking plenty. But I always bike plenty.
Here's the deal: I don't have a lot left to do, in the way of triathloning. I want to maintain the speed I have for Redman (which is in three weeks). But that won't take much more than one hard workout a week (which is one more run workout than I've been doing lately). And the race I'm targeting for the one-mile PR is in early December. Plenty of time.
The main thing I'm struggling against is a self-conscious feeling of laziness. Is it guilt? I'm not sure. I just know that it makes me nervous not to be swimming and running. Makes me feel that I'm not doing enough. Of course, I'm still training hard on the bike (and still enjoying it!), which is exactly one more sport than your average person trains hard for. But it feels strange not to be doing at least three swims and at least three runs each week.
Man, this sport makes you crazy.