Rub some coarsely ground cinnamon into 120g skinless chicken breast and cover with 100ml natural, low fat yoghurt. Marinate in fridge for 30 min. Remove chicken and lay on a piece of foil. Squeeze with orange juice and bake at 180oc/gas 5 for 20 min. Serve chicken with 200g baked sweet potato and steamed green beans. Have a 100g slice of melon to follow.