Both or my pairents are great physicians... and that statement is totally rong. It takes a hell of a lot more than weight to aproxinmate the daily income of calories to a boady to keep lose or gain weight. age size and physical endourance/ammount of physical work on an avarage are just a few that contribute. Some one weighing 130 lbs who plays alot of sports my need well over 2000 calories a day to maintain there weight. A persons matabolism also servs a great factor. So im sorry to say you and the site are RONG.....!!!!!