I have a classmate who is extremely stressed up. He has a 4.0 GPA and is an exception student. But seems like he is pushing himself way too hard and this is very obvious if you talk to him. He is very frequently showing up awake the entire night.
He doesn't have any heath issue (at least he says so) aside from overworking himself and missing sleep constantly without taking any breaks the entire year.
Will professors give a great recommendation letter to such a student? Won't they be concerned about his ability to handle stress in the long term? Talking to him makes you wonder how long it will take him to collapse.