I hesitate to say this put loud, but mid-50s and nothing hurts yet, except the migraines I’ve gotten sine teenage years.
Knees last if you take care of them. Back lasts if you take care of it and are lucky, and don’t get fat, and are lucky, and don’t work a physical job, and are lucky.
Stretch. Exercise. Don’t overeat.
Pineapple juice & whiskey is the gateway cocktail. Make some fresh pineapple juice and just taste it mixed with even a float of Scotch OMG, so delicious! Bourbon on vanilla ice cream is so good too.