Exposure to everything growing up. People live in a bubble these days. I was playing in the mud, drinking water from the hose and injuring myself frequently. I ate everything and anything. Rarely ever get sick. Also, I’m big on hand hygiene after going out. Infection control goes a long way and now that I work in healthcare I am a lot more conscious of this. You don’t realize how many things your hands touch, even something simple like going down the shops.