For me personally, I never was so sick in my life as when my children were between starting nursery school and 3. It was not just respiratory diseases: It was also the time in my life I and my wife had frequent digestive infections. Ohh my...How many times I could not move for 2 days. It felt like I was 80 years old, mixed with the hardest symptoms of food poisoning.

I got sick so often it limited a lot my general life: I stopped practicing sports regularly and started being very careful with sleep(sleep deprivation likely increased the chance of infection), because I knew if I did not lead a perfectly balanced lifestyle I would get sick. I am quite upset I stopped running 15km per week, even with snow. I never fully went back to it, due to fear of getting sick, and having to take care of toddlers while being feverish or nauseated.

In those years I think I was not disease free more than 3 months at a time. In a year where many people decide to not have children, it does not help the cause of having children seeing other parents suffer so much, in those early years. I have non parent friends that get sick after meeting us, resenting meeting us and asking if we are sick, because they spent all the night in the bathroom or with fever. Fortunately it feels we are already immune because we are not sick very often anymore.

> I never fully went back to it, due to fear of getting sick

Does running long distance increase the chance of getting sick?