I did it in college back in the 80's. We called it crank and most people snorted it but it burned my nose to much. I wrapped it up in a tiny ball of toilet paper and ate it(about the size of a large BB). It was speed and I was able to stay up all weekend drinking. I would do it on a Friday night and go to sleep at 3 pm on Sunday ...lol. I did it probably once every 2 months. It took me about a week to recoup from the lack of sleep. It was like jet lag x10