As a man already 30 and older, let me tell you this for free:
Have quality sex at least twice a week to protect your prostate health. Ignore what people say. Your body needs steady sex as you age to keep you going, stay fit, and release excess sperm. Get one good woman and stop running around with different women.
Eat healthy. Exercise routinely. Stop sitting in one position for too long. Walk more. Trek sometimes. Do not always drive or take buses. Do pushups. Drink fruit juice and tigernut drink regularly. Stay fit in body and in bed.
Protect yourself from prostate cancer.
Above all, love God.
What's the 2-2-2-2 Rule for healthy marriages?
2 - Every two weeks go on a date.
2 - Twice a week be sexually intimate.
2 - Two times a year take a trip overnight without kids.
2 - Every two years go somewhere multiple nights without the kids.
The four 2's can bless your marriage.
Too young to vote at 18.
Too young to drink at 21.
Too young to sign a lease at 25.
But somehow fully capable of consenting to childbirth at 12?
The law doesn't protect children. It protects patriarchy.