I highly recommend for pre- training and or just a morning pick ...
I've tried many pre-workout / energy supplements and they all make me very jittery upon initial consumption , then my energy crashes sometime after.. Dr stern's Ultimate endurance and energy supplement was the first pre-work out supplemet I ever tried that gave me energy minus the jitters-- and my energy remained well after my workouts.  I highly recommend for pre- training and or just a morning pick me up... Awesome product !!
Rating: 4 stars