i don't sleep

Tweet

for three night i've not sleep at all.i don't feel sleepy at all and i don't know why,somebody tell me why... then the next day i slept from 7 a.m to 12 p.m i think my biological clock getting crazy i guess.. maybe the stress from exam drive my mind to not to sleep at night.one day after the sleepless night i sleep when im eat,sit, and watch tv even when im chatting and hangout with friends i can sleep too.how to fix this anybody