When weather makes walking impossible, I use the rowing machine in the basement. It's a noble form of exercise, full-bodied and bracing. The first few minutes are agony.
But like most activities that require intense exertion, rowing eventually settles the mind. Arms pull forward, legs push back. The rhythm takes over.
And it's only then, ten minutes in, that the mind can begin to roam. Rowing thoughts are bulleted and basic. They are not walking thoughts. But they are better than not-exercising-at-all thoughts. And yesterday, they were all I had.