I’ve worked in kitchens for 20+ years and know the brutality of the floors. I’ve tried different makes and styles of shoes (that usually is where the problem is), staying off my feet, different office chairs, heating pad that goes with me like it’s my best friend. Nothing has helped. It’s maddening. I’m usually good to go until around lunch time (helps when I’m moving), then it starts up and progressively gets worse to the point where it makes me physically sick (like I said, not every day). It will go like that for a couple of weeks, be fine and then another round.