Caffeine. They can't make up my mind.

I was really surprised by the articles I found below.
My understanding was that caffeine during exercise was bad.
I'm taking the articles as good news. I'm an avid coffee drinker.
5-6 cups a day.
I've long since become immune to its side effects.
Now I can start adding coffee to my waterbottle.

http://www.firstendurance.com/newsletter_caffeine_vol5_10.html


http://www.runnersworld.com/article/0,7120,s6-242-300--11798-1-2X4-3,00.html