Now that this thing called the "sun" has re-appeared, I notice that my gym needs an AC system, quick. In the afternoons, when I'm there, the sun shines directly into the corner 2 window / walls, directly onto the cardio equipment. Now I know why one of the windows is frosted. But it still sucks to do cardio. Or weights.
Lucky for me, the other people that work out there realize the importance of deodorant and wiping down the equipment.