Some people can blaze one before or while they are studying or doing homework some people cant. I think it depends on the person and their tollerence to the plant. If its busy work than I have no problem getting it done without a problem, it can even be fun because it gives your mind something to do. But hard work and memorization I leave alone because I just dont care. I can say that Ive stared at a Chemistry promlem for 20 minutes high, getting nowhere. And it took me about a minute sober the next morning.
Smoke On