If there's one thing I could change about when I was younger, it would be to have listened to people older than me more than I did.

There's a crazy thing happens when you hit your 30s. You suddenly realize that your late teens and 20s passed by quickly and somehow, you suddenly became a full fledged real life adult.

Trust me when I tell you that the signs will start popping up slowly, but once you notice them, you'll realize that your party days are behind you.

Buzzfeed put together a list of shocking realizations that everyone in their late 20s and early 30s has that tells them they are officially grown-ups. Here are a couple examples:

1. If it’s past 8pm and you haven’t gone out yet, you’re in for the night: Remember when you wouldn’t even consider leaving the house before 9pm?!

2. Hangovers are so much worse: they last longer and seem to get worse as the day goes on. In your 20s you quickly recover from a hangover on Saturday morning in enough time to go out Saturday night, but when you’re in your 30s, that totally changes.

3. You start thinking about comfort when you buy clothing and shoes.

4. Going out for New Year’s Eve or any other “drinking holiday” loses its allure.

5. Your body feels awful after you’ve eaten fast food.

6. Your friends start having kids on purpose.

7. You voluntarily buy kale. And you like it.

8. You get pimples and wrinkles. At the same time.

9. You have no clue who any YouTube celebrities are.

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