i'm also really conscious about my caffeine consumption. Green tea is about as far as I go in my normal routine, but I think it's mostly beneficial for me. I'll try to limit myself to only having a can of green tea around twice a week, usually after lunch to beat the food coma. The antioxidants in green tea, the fact that it's zero cals, tastes great, and most importantly it helps break down a fatty meal at lunch, which also reduces food coma. Don't love that it contains caffeine but it's not the worse evil in the world. I'm sure that my poor sleep schedule definitely affects my health more than mild caffeine consumption.