We had some footy players come 2 our skool 2 do a spiel about how good powerade is (or was it gatorade mayb?) and how it replaces lost electrolytes and shit.
They were coming out with all these totally unsubstantiated comments... jst ridiculous sorts of stuff.
I tore thru them with Qs they couldn't answer, then walked out.
My teacher asked me where I thought I was going.
All I said was: "This is a school, not a medium for advertisement."
Haha very nice.
Do you remember what you asked them? 
Mmm... I don't remember fully, but it was mainly about the levels of sugar and salt in the product.
They were like: "Do you know how many cups of fluid an athlete loses in sweat? 6 cups!" and other stuff.
I was like: "Then wouldn't those products do more harm than good to the average person? I hardly fathom any1 doing enuf exercise on a regular basis to warrant such excessive consumption of salt, or 'sodium electrolytes' as you say. Last time I checked, salt was bad 4 u, and most ppl already have 2 much in their diet as it is. Yeah... and I've never sweated that much b4."
I also questioned the fact that they were encouraging children (teenagers/children same diff) 2 drink a product high in sugar - I pointed out that dentists strongly recommend against this, and health professionals say that water is best for hydrating children.
I think @ the time, there were artificial flavours/colours in some of them as well - hopefully that's changed since then...
I dunno... normally I'd jst make a few weird remarks 4 my friends' ears only, but it jst really irritated me that they were marketing their sponsor's product as a healthier and better substitute 4 water.
I guess I figured that there's enuf bullshit diets and exercises myths out there as it is, without them screwing teenagers' minds about something as basic as the benefits of drinking water...

U no... those guys never did come bak 2 do another session... XD
Edit: I am secretly promoting water - can u tell?
Man, is it gonna make me rich ;-)
Now... if only I could figure out how 2 make ppl pay me 4 water... XD
I think I jst morphed this topic in2 a discussion about sports drinks -.-