Let's be honest: your twenties are probably the best years of your life. You're still young enough to enjoy life and your body still works, plus you've started working and maybe have a little bit of cash and independence, but not too many responsibilities yet.
That said, it's easy to miss the forest for the trees and spend that decade messing around and living too much in the moment. Some people who have seen their twenties come and go got on Reddit to weigh in on how they wished they'd lived life way back when.
1. A run-on sentence from Rusky82.
Exercise. Your body's metabolism will slow as you age and if your unfit it will just get worse. Put the effort in early.
2. Or ideally, ZuluCharlieRider, both.
If you marry, marry someone because they are your best friend, you share a common philosophy on life, have common values, and want common goals in your future. Don't marry someone, primarily, because their ass looks good in jeans.
3. It's all liquid for ArmchairTitan.
Drink more water.
Look after your joints and back.
You will feel invincible until your late 20's / early 30's, then it'll suddenly all start catching up to you if you don't look after yourself.
Source: Used to feel invincible, now I'm falling apart.
4. cm103 says you're apparently going to need money when you're older, too.
Start saving for retirement
5. Lin0712 will hold your phone and press the little button if you want to pose over there.
Take more pictures. Sounds stupid but that is one of my biggest regrets is not documenting my life more.
6. Cash in the bank from gammalantern.
Avoid debt. When you start planning in your 30s for houses and marriage and children, having debt that you generated in your 20s in order to buy that sweet 60 inch flat screen for your shitty one-bed apartment... you end up hating the 20-something version of you for being that kind of stupid. If you can't afford to own something in your 20s you pay for it in your 30s and 40s.
7. Rawc90 says to beware of monsters.
Be careful who gets your time and attention. You give it to the wrong people and before you know it you've got no close fiends left. Also, I know today's attitude is free love, and sleep with who you want but in my experience so many people are single because of the terrible relationship they have with love and sex after being heart broken, or feeling used by others. That intimate side of you should be saved for the right people, not saying don't have fun but just be careful!
8. In other words, muskoka83 says you should calm the eff down.
Binge on Bob Ross a bit. He will get your mind right.
9. Galactickiwi is a wise and sensible total killjoy.
Save money. Exercise sometimes. Don't eat complete shit.
10. urchigold says to shut up and put up.
I'd say follow through with any interest you have. There were a bunch of hobbies/habits I wanted to get into, but at the first obstacle or challenge, I'd just go "eh whatever" and give up.
11. FOMO is no-go for consuellabanana.
Don't be afraid of missing out.
Your friends will get married, buy homes, have kids, get promoted, travel the world, and you might feel like you are staying still. Don't feel the pressure. Live your life at your own pace. Make and tell your own stories.
Please don't pride yourself on sleep deprivation, your drinking ability or your workaholism. Do whatever you want, but don't let these traits identify you.
Don't have kids until at least 25. To each his own, but my heart aches every time someone I know get pregnant at an earlier age than that.
You don't need to go cage diving in New Zealand to explore the world around you. Go for a bike ride, or take a cheap bus to a nearby town/neighborhood. Find a hobby.
Build friendships to last.
12. What, archaicmotion?
Ear protection at concerts.
13. DobbnailBoot2016 says to respect your elders, particularly Pop-Pop and Gam-Gam.
I'm in my 40s and my biggest advice would be to treasure each moment you get to spend with your grandparents, if they're still alive. Listen to them and value their wisdom. They're like your real life Obi-wan and Yoda. And if their stories and advice seem out of date or too old-fashioned, it only means you're still too immature to make sense of it yet. By the time it hits you that, "Fuck, they were so right...about everything," they might no longer be around. Even though I loved them so much, not valuing my grandparents enough while they were alive and thinking I knew more than they knew towers over any and all other regrets I have in life.
14. Sick burn, pina_koala.
Wear sunscreen. Your skin will stay good. It doesn't magically rebound on its own.
15. r_elwood says to brace yourself and eliminate all traces of yourself wearing braces.
Clear their social media of pictures from their teen years
16. Kovandy5 names your greatest asset. (Hint: It's you.)
Work on yourself. Invest in you. Learn, study, improve.