Nah i take small brakes in between (for getting stuff to drink and food alltough i have to say while i mostly eat as nuts during exams now i've pritty much eaten not more then a big bag of m&m's :s)
and bigger breaks before i go to bed and before dinner... ow and offcourse before i start i need a break then to get mentally prepared for the horror of learning

I'm still studying and i will continue during this whole fine but a bit cold day

I think you should call your dog superdog or something... Give him a cape and all