Do your cats know when you're not feeling well?

United States
@w1z111 (985)
February 10, 2010 3:48am CST
We have two wonderful cats. One female, one male. The female is older, smaller, and quite demure. The male is young, quite large, and a bit oafish sometimes. We love them both very much; and we know they love us, too! Both of our cats seem to have a built-in sense that lets them know when we're not feeling just right. Whether we're just "pooped-out" from a hard day's work, or down with a "bug", they seem to know it; and they come around a lot more; and even show much more affection. Do your cats do this too?