i've done about 7 hours today because im not confident with my modules.... i usually do from 9-3 on other days but i get distracted and end up doing about 2 hours study
Im a person that loves jumping around..i can't concentrate at all..but i can sit at my table and actually study the night before the exam...ONLY the night before the exam
but my cousin who got 99.8% in UAI said you should do at least 10-12 hrs a day, but you can give yourself a break by having a day per week off