Our expert says:
Your present BMI = 21,1 which is slightly below the ideal, so you need to add a few extra kilojoules to your daily intake. Adult women require 8400 kJ per day to maintain weight when they are moderately active. In your case you can probably use about 8500 kJ per day to boost your weight slightly as you should weigh about 63 kg to have an ideal BMI of 22.
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