LMAO...a conversation about shoes amongst (mostly) guys. haha.
Heel-toe shifting is a semi-advanced maneuver for manual-equipped cars. I've been doing it since I was 16 (now 27) with good results, once practiced.
To Heel-Toe, and WHEN to Heel-Toe:
When you are slowing with the brakes, you may also need to downshift a gear or so to get ready to accelerate again OR to rev-match the next shift down for a smooth transistion. In order to do that, you'd have to have either 3 feet to hold down all pedals at once, or you can heel-toe!
Here's an example - You are running at 60mph, and you need to slow down for a highway on-ramp and enter. You are currently in 5th, proceeding towards the braking point. Hit the brakes with your toe or front part of your foot at least to start slowing. At this point, the revs are going to drop down, and you'll need to downshift, right? So you clutch with your left foot and go down a gear or two...and...now what? That's right, you rotate the heel of your foot (or at least the outer edge of your foot) to blip the throttle up to an RPM that will more or less match the next gear's needs at the speed you are traveling, and let out the clutch. By doing this, you've managed to slow down, shift, and get into the next gear you need smoothly without getting shift-shock, because you've put the engine up at the right RPM's. Really, the only way to drive a manual car with smoothness and efficiency is to master this technique.
To truly heel-toe, you must be able to point your right knee inward and get your foot in a tough, charlie-horse-producing position. At least for me! To make this work for me, I use the left-upper portion of my foot pad to hit the brakes, and I roll my heel edge on the lower right of my foot over to the gas pedal, using my much more flexible ankle instead of my knee and hip. Either way, the maneuver is the same in results...the car maintains balance and control while shifting into a gear to provide the right powerband for the next acceleration event...which is the on-ramp!