I was a little worried about taking Jack3d after several reviews I had read about people not being able to sleep. First, I enjoy drinking soda, and I figured Jack3d would be a good way to stop this unhealthy habbit due to the amounts of caffine in each. I took it as directed about 30 minutes before our workout. Our gym is about an 8 minute drive from my house and I was shocked at how intensly focused on just the road I was. I had an incredible boost of energy and felt like through the whole workout I was holding back a tad even though I was killed by the time I left the gym.
IMO, great stuff. I found a killer deal on it for only $18, plus the shipping. PM me for the link.