I don't use them anymore except for the ON Ami-NO Energy. That when used non daily can still give you a slight kick due to the caffeine and some nice pump. The best part is how good it tastes.
I MISS the days of the original Ripped Force. That was the ultimate pre workout drink. Not worth getting Ultimate Orange back then, I always just loved the way the ephedra/caffeine kicked in the drink form. Get a few for the week and take when I got home from work or school and get ready to go to the gym. Anyone else miss that stuff?

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MDN