Yesterday, I told a candidate that when I have been effective for a full day of campaigning, I gradually work up to it. This is for parades, too. At first it is four hours, then six hours. Gradually, I work up to 8 hours, then 10 hours.
Usually by an Election Day, I can start before the sun comes up and go about 18 hours. I can sleep Wednesday. I realize I am not as young as I was in 1990, but I was in Saginaw for a State Senate candidate before the sun rose and left after dark, then stayed at the improbable John Engler Victory Party until early Wednesday.
Why I gradually work up to a full day of campaigning is that my right knee has been repaired by surgery. It usually does not give me trouble when I gradually work it out. Sometimes I strengthen it through sports, but I often push off with my left foot.
Yesterday was 10 hours. There was nothing gradual about it and there was a lot of walking. Today, it is painful but fortunately my knee is not swollen as it has been in the past. This is why I no longer play contact sports or run on uneven ground.