Positivity and Colds

Yesterday my mom sent me a link to this article called "Colds Hate Positive People." Basically it talks about a study that concluded that our emotions can be tied to our immunity. Not only do positive people get sick less often, the article says, but also, when they do get colds, the colds tend to be less severe.

This is interesting because since I've made an effort to be more positive, I have also felt physically better. I've had more energy, and though I did have that one cold a few weeks ago, it only lasted for a few days, and so far, I've only had one this fall (not bad considering oldest child is in kindergarten and seems to bring home every germ in the world!).

But do I really believe the two things are linked? I'm not sure. I've also been making an effort lately to exercise every day, and I'm obsessive about eating fruits and vegetables, so I don't know if it's positivity alone that's keeping me healthy. But I do think a positive attitude might have something to do with it.

What do you think? Do you think a positive outlook can really keep you from getting sick?