walking makes your body oxygenate your blood, which goes into your brain.
So, whenever I lose INSPIRATION, I go for a walk.
Whenever I lose MOTIVATION.... well that one is harder, but without inspiration I usually lose motivation.
I'll try the 2 minute thing... like right now.
for game motivation I sometimes watch movies that make me want to do a nice game. Like The Matrix, or Jumper (inspiration for my teleporting stuff), or dunno, gamey movies.