How many of you people have tried this stuff? Since I accidentally slept through the UNC game last night, I couldn't sleep well afterwards, so I went to work groggy as crap this morning. I saw this stuff at the vending area in the office and thought I'd give it a try. Within minutes, I feel like a kid who just inhaled an industrial sized bag of Skittles. I can't sit still and feel like runming a marathon. For those of you who've tried it, do you get a major crash when it wears off, or does it wear off gradually? I'm not an energy drink guy so I have no idea. Is it normal for my hands to be shaking right now? I don't coffee so I don't get much caffeine, so I'm not sure how to react to this. Beats feeling tired but I can't sit at my desk. Help me.