Master Po: Close your eyes. What do you hear?
Young Kwai Chang Caine: I hear the water, I hear the birds.
Po: Do you hear your own heartbeat?
Po: Do you hear the grasshopper which is at your feet?
Caine: Old man, how is it that you hear these things?
Po: Young man, how is it that you do not?
That’s a relevant quote not just because of the name of the exercise, but because when you do Grasshoppers in high reps it feels like someone is burning a dragon tattoo to the inside of your LUNGS.