1. Keep it balanced
Many experts and studies agree that children and teenagers need a balanced diet including all food groups for healthy growth and development, so make sure lunches are varied and nutritious. Iron-rich leafy green vegetables such as spinach, which can be added into sandwiches, give a natural energy boost, while complex carbs such as sweet potatoes give slow-release energy to help sustain kids through classes. Also add in plenty of fruits, especially berries, to help with concentration levels. Previous research has also found that topping up levels of omega-3 with oily fish such as salmon can help boost brain functioning, and consider a hard-boiled egg for a nutritious snack, with a study published last year finding that they can encourage healthy growth.