Koolz - I was on 700-800 with a peak day every week for months. One key thing was taking vitamins and making sure I got plenty of water (like 100 oz a day). Are you being medically supervised? If yes, let them know as you might need more calories or a different micro nutrition ratio. I also made sure that my food was well balanced with a 35-40 carb, 20-30 fat, and 35-40 protein.

BTW, I was medically supervised with my program.