I actually noticed sometimes when going up stairs that aren't so tall I first put the tip of my foot on the next stair and then do the "jumping" movement like a lemming does
A few more things when you actually play too much lemmings:
-If you think you can dig away the edges of steel with your bare hands.
-If you think you can walk safely at the bottom of water or lava,as long as you don't hit the "trigger area".
-If you think you can fall down safely of a cliff by hitting a few edges every few meters.
-If you think you may bomb a policeman regulating the traffic (making a blocker-like appearance).
-When you see no open door somewhere and think there's a hidden exit somewhere,and start bashing and digging around to find it.