I've taught this technique thousands of times and it works!
The real magic of this stair technique is the little secret tip in this clip...
Imagine trying to PULL your foot up tight and close under your body like a rubber band is pulling your heel to the "crease under your cheek" instead of trying to PUSH your body up the stairs!
This change in focus will give you speed with going up stairs while protecting your knees.
Click HERE to watch a more detailed stair technique video on my YouTube site.