Since he works really hard, his determination caiuses him to have a lot of focus and concentration on himself. Forgetting the other things in life, working real hard দিন and night trying to be the best. I can't say for sure about it, cause the লেখক never showed a side of him resembling that. Just cause the authors don't প্রদর্শনী it, doesn' t mean he doesn't do it. They often প্রদর্শনী the charectors brushing, eating অথবা any of the hygienal practices, but that doesn't mean they don't do that. So it can go either way