I found this interesting today during a Pettit workout.
Two years ago before my break I was using the pedalling instructions like kick over, pull through the bottom, legs like pistons etc…i used to have a small problem when I got fatigued my left knee brushed the top tube…I done a lot of those drills before my lay off.
Today I discovered I was doing the efficient pedalling after this time …and no longer any left knee brushing on the top tube 
Yay!! That’s awesome 
I do the same when I get tired, and it’s a matter of practicing and making it a muscle memory haha.
Yeah just shows my muscle memory still works
I love this!
It’s really easy to want to simply throw shims, insoles, wedges, etc. at our problems so see them quickly disappear, but something I’ve actually brought over to the bike from running is that strengthening discrepancies should always come first if possible.
Nice job sticking with it! 
Thanks a lot…I even employ it on the road… going up a hill do the high knee lift for example to help keep a light quick cadence.