"Thank you for allowing me to try out the Q-Link Pendant.  I started wearing it while training for the Honolulu Marathon.  I am generally skeptical of these kinds of devices but I must say that my training seemed to be much easier than ever before.  Also, while running in the marathon, for the first time ever, I didn't hit the "wall".  I felt great during and after the marathon.  Either I'm getting stronger and better in my old age or there is something magical about the Q-Link Pendant."