Our expert says:
If your BMI is already so low and you exercise every day, I would recommend that you ingest at least 8400 kJ per day. This will sustain your energy levels, esp if you increase your intake of low-fat carbohydrates and proteins. The carbs provide you with energy and the proteins will help for the muscle mass. Concentrate on doing exercises with weights because if you do more cardio exercises you may lose even more weight.
Please do see a dietitian for an individual diet prescription.
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