"In one case study, a patient who consumed four litres of Earl Grey tea per day reported muscle cramps, which were attributed to the function of the bergapten in bergamot oil as a potassium channel blocker. The symptoms subsided upon reducing his consumption of Earl Grey tea to one litre per day." - Tudor Bosman

Also, 4L a day is gross. And possibly dangerous even if it was just water... - Andrew C (✔)