There are certain things that you need to just stop doing after your 20's. For example, once you turn 30 you need to stop drinking too much. You can't keep going into work hungover and you need to figure out when you can (or can't) party.
Slacker says that all of these things on this list are for your health and he totally agrees with them. You need to stop tanning, get your credit in line, and stop smoking. Steve thinks that you need to start smoking more once you turn 30! Also, an ex girlfriend of his had told him that once a man turns 30, they can't wear sports jerseys anymore.
There are a lot of things you need to stop doing when you turn 30. Some of them are just for your health and some of them are for your looks. Let's face it, after women turn 30 they can't keep wearing short shorts with words written across their butt and men can't keep wearing their hats turned around backwards.