How to avoid drowsiness?

To avoid drowsiness during compelling times of work, just take a break! Do some other work than the current one! It would be much helpful to do a wierd thing like shouting aloud (exception for offices), raising a conversation with a friend or colleague, especially abt gossips going around, coz they intrude into human brains much faster... or any other interesting work which conquers ur sleep. No other medicine works better! Now u got to understand y i am posting this column in my blog? Hv fun!!! :-D