Quote

I used to try to run five miles every other day, which I worked up to and I was doing it, but I was subjected to my own thoughts for forty minutes without any sensory input, and I couldn't stand what I thought.

Brain studies of mental workouts in which you sustain a single, chosen focus show that the more you detach from what's distracting you and refocus on what you should be paying attention to, the stronger this brain circuitry becomes.

With Parkinson's, you do need more rest.

When walking, you see things that you miss in a motor car or on the train. You give your mind space to ponder.

I prefer physical exhaustion over mental fatigue any day.

Tiredness sets a natural limit to what a human being is prepared to walk daily, and this limit has taught man all through history the size of rural or urban communities.

I've got so many ideas, and sometimes the more exhausted my body gets, the more active my mind gets.

I've worked myself to exhaustion before. I was so young, and I thought I could do everything; it was just too much for my body and my mind.

If I'm alone too long I think too much, and I'm not interested in doing that. That won't lead anywhere good, I'm sure. If I'm busy I tend to stay out of trouble. An idle mind is the devil's playground.