http://news.bbc.co.uk/2/hi/uk_news/magazine/7684963.stm Scary students. It is not so much the question of whether taking Ritalin to help you study gives you more of an unfair edge over a coffee-drinker; it's that they're putting their health at risk to study better. If you put in more effort, or you try to find a study method that suits you, that might work too. If you've done your best, should you really push yourself at so much risk?
As for me:
Normal sleepy time: 9.30pm
One small cup of teh-si in the early afternoon: 10.45pm
One small cup of teh-si in the morning and one cup of teh-peng with lunch: 11.30pm
With coffee: I don't really want to know