[wwortiz]

I'm confused as green tea can have a similar caffeine content to coffee, especially at 3-5 cups.

[annajohnson]

Green tea contains caffeine... so I'm confused too.

[yesimahuman]

I also notice a much lower effect from green tea. I wonder if it's the different methods of preparation? Consequently I notice a much smaller effect from every single drink with caffeine when compared with plain coffee.

[foljs]

And who said he compared 3-5 cups of tea with ONE cup of coffee?

Also (from the wild intertubes):

amount of caffeine in an 8oz cup of various teas and coffee:

Coffee: 100 mg Black Tea: 40 to 50 mg Oolong Tea: 25 to 35 mg Green Tea: 20 to 30 mg Decaffeinated Black Tea: 4 mg Decaffeinated Green Tea: 4 mg