What do u do when??????????/?

i hav exams and during the day at home there is noise i live with my family of 9 relatives and i juz can't concentrate in the day wen they r awake and i can't fall asleep during the day..i jz can't.....and the nite time is the only time i can get peace and quiet to study wen they r all asleep...wat can i do to stay awake and alert to study besides drinking coffee