MS by Research scholar day schedule

Wanted to know how hectic the life of a MS Research student is especially in the 1st sem? Do they get time to pursue extra curricular or prepare of other competitive exams side by side? Minimum and maximum how much free time does one get? And what is the day of an MS scholar in the 1st year look like? Plus are the courses too challenging along with quizzes and assignments? And are Sundays and Saturdays off?