I can't drink things like that. I would probably end up in the hospital if I did. I have something going on with my heart that seriously restricts my caffeine intake. I can only drink less than half a can of pop a day. Otherwise, I start not being able to get enough oxygen in my blood. When that happens, I am seriously out of breath all the time, my heart beats irregularly, I get really tired and confused...stuff like that. It's frightening.
So, I drink lots of White and Herbal White Teas that I purchase from my friend, who grows it in China. He owns www.shangtea.com (shameless namedropping, lol) It has only 10% approx. of the caffeine in a can of pop, so I feel great when I drink it!! I brew it myself and drink it hot, 3-6 cups a day. ^_^