At the weigh-in, the day before, I step off the scale at 185-186. (If it’s not a title fight, the UFC permits a 1 pound allowance, and believe me, I use it). 

Since I cut down my food and water intake for days before the weigh-in, my stomach shrinks. Although my mind says EAT, I know I’ll get sick if I pour it on. So after formal announcement of my weight, I’ll eat 3 PB&J, each at 15 minute intervals. 
,br> During this phase I’m drinking a water/Pedialyte mixture at a slow steady pace. Before I go to bed I will have ingested 2 gallons of liquid. Each gallon of water weighs 8 pounds - so I will have taken in 16 pounds of fluid alone.