yeah totally!
hey
i did the hsc last year and recieved a UAI of 89.5, leading up to hte exams i was doing about 7-8 hours a day. but considering htat i was at a public library with friends i actually did about 4 to 5. it is only worth doing those hours if they are productive, if you are studying and you feel that your not doing effective study, STOP! there's no point in wasting time, go for a run and then get back into it!!!!
in regard to the 5 hours a day, in the long run its not worth it, being at uni this year has opened my eyes to the fact that the HSC is the biggest wank under the face of the planet, but in saying that we all have to do and make the most out of it. so if you want to get into the best degree you can possibly do next year then i suggest you just slog out and do the 5 hours, you'll be rewarded in the long run !!!!!!!
Good Luck guys and have fun at schoolies !!!!!!!!!!!!!