After the workout, the app's artificial intelligence software system uses feedback from Ms. Wayner and its other 53 million users around the world to adjust future training sessions.
Astronauts also workout to combat the dreaded 'space snuffles' – an unlovely condition where bodily fluids, no longer tugged downward by gravity, accumulate in the head.
But as business owners wait for that financial relief, they're trying to stay connected to customers. Yates holding free virtual workout classes making no money.