The Old School Cool Reddit community says that it celebrates everyone from the past who’s looking hip: “Everything from beatniks to bikers, mods to rude boys, hippies to ravers. And everything in between.”

The subreddit has a whopping 14.5 million members and it asks its members that they don’t post any pictures of people from 1995 onward. Does that mean that every photo older than 25 is considered ‘old school’ now? We sure hope that this term doesn’t apply to people born before 1995, too!

It’s not too much of a stretch to say that people in the past aged faster than we do now. Why? One of the biggest factors related to visible aging is sun exposure: the more time you spend in the sun, the more it damages your skin, the older you’ll look.

Since more people used to work and spend time outdoors in the past (and sunscreen wasn’t as big of a thing as it is now), they visibly aged faster. Compare that to how more and more people in 2020 are spending way more time indoors and will apply sunscreen when they go outside and there you have it—mystery solved! Of course, this doesn’t apply to everyone in the 21st century, but there’s a definite trend.

Some other things that make you age faster are stress, constantly changing your diet, not drinking enough water, overindulging in soda, and neglecting your friendships. Keep that in mind if you want to keep looking and feeling young, dear Pandas!