TIME LOVING *

TIME MANAGEMENT TIMETABLE
I have 24 hours a day, 7 days a week to do the things I need to do.
The breakdown

I have 168 hours a week.
1) SLEEP - 8 hours a day x 7 = 56 (This is the goal.)
2) STUDY - My professor said that one must devote 20 hours per week for his 4-unit subject. So that means 5 hours per unit. I have 18 units, so I should devote (18 units x 5 hours) 90 hours for studying. Oh come on!
3) GYM/SHOP/PLAY/LEISURE time in short - 3 hours a day x 7 = 21

168 - 56 - 90 - 21 = 1
That leaves me with 1 hour of free time!
Ohhhhhh come on.