My mother turns 91 in a few weeks. It’s really amazing how well she’s doing. You’d never guess 91, and I just knocked on wood.
My parents turned a combined 200 years old two days ago...mom 3 months past her 99th birthday, dad will turn 101 in 3 months (if he makes it, don't think that's in the cards though.)
IHS class of 75 has smallish reunions every year in Durand Park, attended by 30-40. Big ones every 5 years attended by 200-300. Try to make them all.