Ive been lifting now for about 2.5 years. I used Jack3d for nearly a year, came off and moved on to Craze. Both worked great but over time instead of building a tolerance, it seemed like I became more sensitive to them. Mostly in the sleep department. This is the main reason why I stopped Jack3d because that stuff was awesome. Well fast forward 8-9 months and I am missing the pre workouts. I just like what they can help me do in the gym. So yesterday I try this stuff called Beyond Raw Ravage and..... I cant sleep again. I toss and turn for a few hours and am up early today. I know how important sleep is to not only for myself but also for my muscles. So I am torn between getting some awesome workouts or sleep.