So I got my free sample the other day. I've been running off of 3 hours of sleep, so I figured I would use it today. And all I have to say is wow. I took all 8 caps since I seem to not respond to much. By far my favorite pre-workout supplement. I've taken explode, shotgun, superpump, jacked, etc. and all I seem to get were headaches and the runs. Not with Pump3d though. Energy and focus were through the roof, I didn't want to stop at the gym. Its a nice high good feeling and Im still going. I haven't experienced any kind of crash or anything, so we'll see. So far, I give it two thumbs up. By the way, I do not work for or rep AGX Sports. I just tell it like it is from my side. Good shit.