This will drive you nuts.
This from an orthopedic surgeon. It will confuse your mind and you’ll keep trying it over and over again to see if you can outsmart your foot, but you can’t. It’s pre-programed in your brain.
1. While sitting at your desk, lift your right foot off the floor and make clockwise circles.
Oops! There’s more.
2. Now, while doing this, draw the number “6” in the air with your right hand. Your foot will change directions.
There’s nothing you can do about it