I've figured out what the problem is with me and exercise.
SPIKE: I had a plan.
ANGEL: You? A plan?
SPIKE: A good plan. Carefully laid out. But I got bored.
This is my problem. Exercise bores me. This is why jogging is so not my thing. And there's a definite pattern: I start something (yoga, weight-lifting, swimming) full of enthusiasm and interest because there's something to learn. But then, sooner or later, I hit the point where the intellectual challenge is gone, and it's all down to the body. And I, like Spike, get bored.
Now, my current slump is due partly to the fact that it's fucking cold, but also just to the fact that I resent an hour or more taken out of my day in which my brain has nothing to do.
Clearly I need something which would maintain a slight but constant upward trend on the learning curve. But I don't know what that would be.
*sigh*