And inside your own house would be better. It's not about your immune system; it's about taking care of yourself. You're not, and if you don't have a good reason, you're being very stupid.

[There's a certain brand of logic there. Honest.]

Last winter I got sick. I was stuck inside for too long, and I got that same feeling like I was going nuts. So if you've been sick and inside for awhile, then that's one thing. If it's only been a couple of days, then you don't have a good reason, and you're being incredibly dumb.