It's healthy, and contagious.
You don't hear those two terms used together very often.
Here is a song about smiling, from the 70's
Wet Willie
Keep on smilin through the rain, laughin at the pain
Rollin with the changes til the sun comes out again
Keep on smilin through the rain, laughin at the pain
Rollin with the changes, singin this refrain
I smiled a lot today. I spent a great weekend with my sister and our kids, now we're getting ready to go camping. Noone should let a day go by
without smiling no matter how tough things are.
I like to make other people smile too......see my signature.