Because Beastdrol will dehydrate you faster. Drinking water also helps decrease the chance of cramping, help lower blood pressure, and help cleanse the body.
I too drink a large cup of coffee in the morning after my breakfast but I make sure to drink a little over a gallon of water a day.
In my opinion, you want to be taking excess calories on Beastdrol as that is the best way to take advantage of it. Gotta feed the Beast!
Currently taking 1000 calories over my maintenance and haven't gained much fat at all to be very honest!
What's your dosage for the cycle looking like? Got a test base?