Sure, 40 is the new 30, but some days you might wonder if your body got the memo. While there are plenty of fabulous things that happen when you turn 40, the trade-off is that you can't skate by health-wise like you could in your 20s and 30s: Your metabolism starts to slow down, your risk factors for certain conditions go up, and it becomes a whole lot harder to neglect your body and get away with it.

That doesn't mean you have to let middle age wreak havoc on your well-being, but you do have to be more careful about avoiding a few common mistakes. Here are a few bad habits to break so you can stay healthy in your 40s and beyond.