energy booster, any?

during lunch, i din join the rest cox i was feeling fatigue. I just plunged head on my desk and slept for an hour. I was feeling cold then. Lan jie bought me papaya and cadbury chocolate for lunch. after a short nap, i start to feel slightly better. In the evening, i joined my sec friends for dinner , follow by movie "click" which i doze off in most of the scenes... im exhausted. tmr gg ktv with friends .... haiz... can someone lend me their shoulder to rest when im sleepy...