I've had an email saying I should have 1400 Calories a day but the BMI calulator suggests 1500 to 2000 Calories a day. 1400 Calories is too little. I feel dizzy and confused on this and hungry all the time. Cutting back to this level I'm losing 0.5kg a day! I only want to lose 1kg or less a week. 1400 Calories a day would surely be for someone who is inactive wouldn't it?