I hold the record as far as friends go, I recorded from Jan 1 one year to Jan 1 the next, just how much caffeine I drank, and I am ashamed to say, I drank on average 2 two liters a day making my caffeine consumption over 35k ounces of mountain dew that year, I have slowed down to about 3 20oz bottles every day during the week, and 2 on weekends, still too much, but hey, it tastes good