First, when you are a breast-feeding mama, like I currently am, when you are sick, the antibodies your body makes are passed along to your baby. The hope is that by passing along those antibodies, your baby won't get sick. Unfortunately, in my case, this has not happened, although my little Sophia has thankfully not gotten as sick as me, so those antibodies from me being sick have helped a little!
Secondly, there is nothing like being laid low to prove to yourself just how much you really can do. When you are a parent, the world doesn't stop when you get sick. You still have to get up and care for your children.
Even though my husband tried to help, he was at work for the majority of the day. Even while feeling like I had been hit by a truck, I was still able to feed my children, clothe them, change diapers, etc. It may not sound like much, but with the way I was feeling, it felt like major accomplishments!
Lastly, when I'm sick, I seem to be calmer with my children. I just don't have the energy to get after them for every transgression and that can be a good thing! It means that rather than running to tell mom, they get to work out who has more Lego's, or whose turn it is on their own. Negotiating their own settlements is a very good thing! Too often, when I am not sick, I find it easier to simply solve the problem for them, but when they do it themselves, they learn from the experience!