Around 1-2 x a day, all of a sudden my disk or sciatic will get pinched, my knee's will buckle, and I'll need to catch myself.
Very odd, but a bit hilarious.
Happened when paying for food-shopping on SUN, the poor girl was like "OMG are you OK"??
Me: "You, no worries, normal day for me".
Inversion's been helping a bit in this area...