I think that hiding children from the Sun is not beneficial either... playing outdoors can never be replaced by parks inside a shopping center... we just have to cover our heads and use sunscreen if necessary... play or do Outdoor activities activate our mind. Pure air activates our lungs. Here in Lima, Peru, where I have lived for 7 years, we are in winter and the outdoor parks are wet because of the humidity and the cold is quite strong! However, I shelter my little ones well and let them free on the slide...