Well I close to 42, old enough to know better and still young enough not to care.
I am learning how to age by my parents.
Dad: Still rides his Yamaha when the roads and wether are nice.
For the colder days he hops into the Targa (new to him) and tears up the road. He likes to try and ketch the kid, please note I said "try"
He retired from his job of making artificial limbs after about 30 years. To occupy his time he joined the Sherrif dept. He works more now than before he retired. He will fart in public, only exclaiming "pull my finger" He is a rolling joke book, and is the type of fellow you want at a party, lots of fun.
My Mom: pushing 80.
She retired a few years ago from her only job. childrens PT.
She spends her days delivering meals to "old folks"
She is the first one to hop on the bike when a ride is called for, and she knits while riding shotgun with dad. (in the car)
My parents travel all the time and make a 2 week trip to CO every year, and yes they ski. My mom out ski's dad(and has for years) and it makes him mad. This is the sorce of many jokes, from dad included.
This is how I intend to do it.
I have a 99year old neighbor, he still drives, only wears 3 piece suits, and never stops going. Very fun fellow. He quit smoking at the age of 96, he said it was knocking too many years off his life.

Not all old people are old