Get sick. And blow your nose A LOT.
Seriously, it works. I must have abs of steel by now. So much so, that you can bounce a quarter, or even a large car, off of them.
Did you hear about Whole Foods not using plastic bags anymore? I'm excited about this and think every single grocery store should stop using plastic bags. Instead, we should all use ones like this. I just got mine in the mail a few days ago and it's totally awesomely not plastic.