aint i suppose to be tired?

its like almost 3am right now but still i dont feel like sleeping,why huh?i was supposely to be freaking tired cuz i was helping out a career employment fair in taylors college which is held by taylors,AIESEC and few more organisation..i was just being a student helper trying to carry stuff,help out on the registration,jaga for the lunch and chec if tea and coffee is enough and yet i'm getting so freaking tired...but once i mandi after dinner i got so energised till now that i couldnt sleep..weird huh??i need pills =s