Being around kids(and around kids who are around other kids a lot), means I get exposed to everything going around. Some are nuisances. Some knock me down!
You have a lot of natural energy, so you understand how awful it feels to not have that energy for even just a few days. It makes me wonder how I would handle a chronic illness. If I don't have energy and get exercise, I'm really no fun at all.
I know exactly what you mean. There is a point in every illness where I just want to die and get it over with.