There's a scene in the movie Red Dawn:
After a skirmish in which two members of the group died:
Jed Eckert : [after the deaths of Aardvark and Colonel Tanner] It's kind of strange, isn't it? How the mountains pay us no attention at all. You laugh or you cry... The wind just keeps on blowing.
Matt Eckert : You're getting pretty lean on feelings, aren't you?
Jed Eckert : I can't afford them.
Matt Eckert : Even if that had been me instead of Aardvark?
Given that one of the meanings of the adjective lean is "thin", does the line mean "You are becoming emaciated because of your feelings"?