The motions of weeding are simple: Reach, grab, pull and throw to the side. The question is whether you perform this operation standing up, kneeling or sitting down. Given the buggy nature of the territory, given the topography of my garden (the weeds are scattered across a wide area rather than concentrated in one patch), I decided the other day to weed while standing.

This entailed not just standing, of course, but bending and straightening. And bending and straightening. And bending and straightening. And … you get the picture: Now I can barely bend or straighten at all!

Which brings to mind not just the weakness of my flesh but also the posture of Africa. My visit last winter was brief but long enough to see that the average Beninese spends much of his or her time bending over to wash clothes, sweep or tend a fire.

The Africans I met have no need of exercise classes or Fitbits. No “Absession” or “Buns, Hips and Thighs” for them. They walk to the pump, tote the water, pound the yams. They bend and crouch and stoop all day long. And when they wake up the next day, they have no trouble getting out of bed — if they have a bed to get out of, that is.