Gradual loss is good and will be permanent if you follow this programme. The same applies if you are underweight and wish to gain healthy bodyweight. Keep your goals clearly in your mind. Believe and achieve. Constantly visualise your goals and you will achieve them.
Energy is measured in units called calories.
The average woman requires 2,000 calories. One of the reasons for the difference between the male and female requirements is that men are naturally more muscular than women and muscles burn calories even when resting. If calories are kept at these levels then bodyweight will remain constant. Negative calorie balance or consumption of fewer calories will result in weight loss. Positive calorie balance or consumption of more calories than required to maintain the RMR results in weight gain.