Good or Bad ? I find it has actually helped me a bit lately as I'm up at 5:30am, get off work at 3, hit the gym, then have muay thai class at 7:30pm, I drink one right around 7 and I feel good for a good solid hour...some people say it's bad because you peak fast then come down hard, I peak, that's for sure, but it lasts about an hour...now I'm debating to take this before a fight...