There's obviously some difference in metabolism of caffeine from coffee and from tea. I drink 3-4 huge 0.5L cups of green tea during the day and it has no ener

There's obviously some difference in metabolism of caffeine from coffee and from tea. I drink 3-4 huge 0.5L cups of green tea during the day and it has no energizing effect. I rarely drink coffee but when I do, it energizes me a lot.