When I took a look at the amino pump, i wated soemthing in stims that would wake me up when i am feeling sleepy or tired. . I USUALLY LOOK FOR IN A PRE WORKOUT IS that it actually does what it says and works hard, and kicks in when i begin to lift and want that pump! i look for a product that actual does it's job and and when i started lifting man did this ISH!! almost did not want to leave the gym and . after the training is completely over i want a superior product that will not have to make me feel like ok time for bed feeling but something that will be ease off of me and let me gently back down off my workout high bottom line this works period. This product does everything i mentioned, i love the way it makes me feel and effects! Jo