I got this in the mail yesterday after pilfering sample from gnc for a while. Watermellon is my favorite flavor and only has 5 cals a serving. This stuff really works. I took a serving 30 min before my hour run and felt the pump. After 30 minutes of running, I still felt awesome and like I had only done a 5 min jog. Started to get fatigued at 50 minutes, but still had energy in the tank. Now the question is do you think I could use this in a 5 k compete? On the back, there is this big disclaimer about how this should not be used by certain sports because it may cause false positive on PS ( whatever that means). I am not sure if the races ban this kind of stuff. Thoughts?

PS = Prohibited substances

PS = Prohibited substances

Prohibited by sponsored races like 5k, 10k 1/2 or marathon? I am just curious because it REALLY helped me run without getting tired until 50 minutes in. I am asking about use of this in a real race because I simply do not know the answer.

Unless you are running a sanctioned race, by some type of athletic authority I don't think you will have a problem. I use to run doing the ECY stack all the time.

Unless you are running a sanctioned race' date=' by some type of athletic authority I don't think you will have a problem. I use to run doing the ECY stack all the time.[/quote']

Thanks John.