What people also need to remember is that the reason the diets work, beyond the supplements (calcium, magnesium, potassium)is that it is scientifically proven that the diet works because
1. girls are hardier
2. boys die more often inutero
When the body feels like it is starving, going through a malnutrition period, it gears towards a girl, because she is most likely going to survive...and when you are eating a lot and full, the body take it that you are doing well and your diet is such to support having a boy. Proven scientific fact. That is also why the dieting and exercise sway girl. The higher fat diets tend to sway boy, because that is how the body perceives the intake...as healthy and okay to support a boy.