The depression afterwards is the fuckin' worst. I compare X to good feelings on credit. You'll feel completely wonderful for a few hours or a night, but you pay it back the next few days afterwards. New users don't get it much, but after you've dropped quite a few times, you'll notice the depression and side effects. I wouldn't use it on a cycle, just because of the apathy and depression that follows. You might not feel like doing shit (including eating due to E's amphetamine like qualities). You'll also dehydrate easily (not good for bulking). But you'll probably roll hard as hell, I know I did coming off my last cycle... hard excercise has been shown to increase serotonin, and you'll be a bad ass cat in the club with a nice body and all the confidence chemistry can buy. Just be safe whatever you do.