Question: what happens if you drink a gallon of milk in one day?
Answer: Just drink a gallon of whole milk a day on top of eating three meals day and lifting heavy. That extra milk adds about 2400 calories and 120g of protein. GOMAD therefore makes it easier to reach a caloric surplus to gain weight. It has helped the most stubborn hardgainers and ectomorphs gain up to 25lb in only 25 days.