Our expert says:
You don't mention your age or height, so I can't work out your BMI to assess if you are underweight or not. Are you a leaner or a teacher? It is nonsense that you are not given sufficient time over lunch to at least eat a fruit, a wholewheat sandwich, a yoghurt and have a cup of tea or drink some fruit juice. If you are a teacher then ask the other teachers to help you change this rushed schedule. If you are a learner then ask your parents to lobby the school to allow a decent lunch break. If you are very underweight for your height with a BMI below 18 then you can also use energy bars to snack on between classes. It should not take more than 5 minutes to eat an energy bar! Make sure that you have a big healthy breakfast and an energy-dense supper, e.g. breakfast: fruit or fruit juice, high-energy muesli with full-cream milk/yoghurt, boiled egg or peanut butter and/or jam/marmalade with 2 slices of wholewheat toast, coffee or tea with full cream milk.
I hope this helps
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