Upside-down craze claims lots of health benefits

IT occurs to me, as I hang from my ankles in a contraption designed to fully invert the human body, how infrequently in my life I have actually turned myself completely upside down.
Barring handstands as a child and the occasional theme park experience, the only other times I’ve found my feet above my head are during one forgettable trapeze lesson and when I’ve flirted with certain types of yoga.