I'm not sure if this is unusual with sust or not, but i'm halfway through my 2nd wk of my cycle and it seems like one day i'm stronger than i ever was, then the very next day i'm back to normal but i get more of a pump from less weight!!! Its kinda frustrating and i know that the test doesn't even really kick in until wk 3 or 4, but is this the so called peak and valley effect. Also, could tweaking my diet a bit help, i'm getting about 3200 calories a day right now, maybe trying 4000 a day would help.