LOL. Just trying to help you get some answers!
Just looking at AMP...the first clue should be Mountain Dew. It can't be better for you than a soda when the base of it is just a soda. Plus extra carbs on top of all the high fructose corn syrup which is really bad for you if you take in too much. Besides that they just throw in a bunch of herbs, vitamins, and taurine. It may give you energy...but yeah, it's still bad for you.
Looks like the same kind of thing with the No Fear and I suspect they're all like that. Plus having more caffeine than your typical soda..which would explain that addictive effect. Trust me I know how addictive caffeine really is