This is from an orthopedic surgeon:
The 2-second exercise below will ultimately confuse your mind and challenge you to outsmart your right foot!
Sounds hokey, right?
Just give it a try...
1. While sitting at your desk in front of the computer, lift your right foot off the floor and rotate it in clockwise circles.
2. Continue to rotate your foot in clockwise circles AND draw a "6" in the air with your right hand.
Did you see that?
Your foot changed directions on you!
Just another piece of useless, and now annoying, information that will confound you all day long!