If I Was a Horseman - by E. Abraham Ola

Animals need sunshine too:

If I was a horseman, I would know that a horse (or human) standing unnaturally still and stiff in a tight space like a racetrack stall for 23 hours per day is susceptible to arthritic conditions. I would know that horses need an hour afternoon walk in the sun to keep their limbs mobile and to receive some of the vital natural vitamin D that helps keep horses sound and healthy. I would provide small sun-yards for my racehorses so that weather permitting, they could spend a second hour in the sun each day, rather than spending 23 hours locked in far too small a stall while breathing virus- and bacteria-laden air.