To borrow a CompSci term, things can be overloaded aka exercise and meditation or other healthy activities that help foster energy, focus, and wellbeing can be social hobbies also. Yeah in school I found that like the beginning of the semester was very open and after midterms but the week or two before midterms and the two or three weeks before the final were very loaded with school work. Then again the vast majority of my grade for the majority of my classes were just those two or three exams.