How do some people maintain their youth for a long time?

Genetics, eating healthy, good sleep, exercise and a positive attitude on life. Dwelling on negative thoughts does nothing for the soul. I'm 29, but look five years younger due to what I mentioned above. My only vice is that I smoke cigarettes but keep it at five per day. Don't hate me because I smoke and yes I know, I should quit.

Staying up late.

Drinking lots of coke.

Avoid exercise at all cost.

Avoid vegetables,fruits,and lean proteins.

Consume alcohol more often.

Consume cigarettes more often or both alcohol and cigarettes at the same time if you can.

Always stay inside watching movies and playing video games.

Put finger in throat to lose weight faster.

Hope I helped.

Drinking plenty of water. Good diet including plenty of fruit and veg. Regular exercise and fresh air. Around 8 hours sleep each night. Avoid cigarettes and processed or junk food. Keeping a young mind.

Good genes and they have taken care of themselves all their lives. My parents are a good example of this. My dad is 76 and my mom is 69, but they both look and act 20 years younger than they are.

Genetics and drinking lots of water and getting a good amount of sleep every night helps, or if you have lots of money like celebrities.

Genetics, staying out of the sun or using protection from the sun (keeps the skin young looking), eating well, and staying physically and mentally active.

No alcohol and stay out of sun, drink water and eat right.... I look like a CHILD.

Active minds.

They get a young trophy wife.

Alcohol is a preservative