Do you drink them? Does your tween?
I was watching an episode of Anderson Cooper's talk show and he talked about a young girl drinking an energy drink and died. She did have an underlying heart condition that was not serious and didn't effect her activities and such (actually, it's a condition that many people have but don't know).
Anyways, I'm wondering if you and your tween drink them? I will be honest in that I have NEVER had an energy drink in my life. I can barely handle a strong cup of coffee which is why I try to drink half caffeine or decaf (I do like the taste of coffee).