Out door activities in my opinion is the best thing to do for our kids. I was grew up in tropical country with mostly sunshine almost whole year. Even when it rainy season, me and my siblings also some neighbor’s kids played under the rains without worrying and guilty feeling from our parents. and guest what?! We hardly ever got heavy/ serious sickness due to those activities.
Maybe because playing out side require many physical activities which influence increasing immune system for our body. And beside that out door activities may reduce kid’s stress.