What's better than sleep or absence of twinges

X: Please don't burn out. I don't want to take for granted that you can do what I can't.

Y: I am not gonna burn out. 

X: Well I would you know 

Y: (Jokingly) I can labor, I'm a Mexican.

X: Ha ha ha (feeling pain in lower back) oh my god...

Y: I have the stamina to do it.

X: We are very different people...