I think it all depends on...
I tried to do everything above ( including masturbate... )
however, for me, taking rest makes me more lazy and not to go back to study.. so I don't go outside, watching movie or any shows.. this works worst.. for me..
I prefer reading books, or just skim the flash card.
best thing for me when I loose motivate is I just don't do anything and just sitting at the dest, looking at the ceiling, or staring through the windows and think nothing for 10 mins
or imagine myself having interview talking awesome things so that everyone get surprised, or being a dentist and live life so happy..
and then realized that I am acting like so dumb and see the kalan review note and then go back to study.
Don't just go outside or do something else even if you need to take a rest unless it's scheduled..
SIT YOUR ASS ON THE CHAIR , never let it go !!
do anything within the area, except internet..