yeah, I am getting really close to 60 years old (I'm 58). I have been dying my hair but let it grow out to its ugly greyness. I have gotten senior discounts without asking for them!!

yet i am still doing pushups, lifting weights, and of course, cycling. Being older does have some benefits; you can flirt without being taken too seriously, and i wouldn't trade my 25 year old mental state for what I have now.
I am more patient, happier, calmer, wiser.
I have all sorts of stupid aches and pains including some that don't seem to go away.
It's scary territory. My mother just became a widow, she's 20 years older than me. So in 20 years I will be at the precipice myself.
Another thing that has changed for me with age is my determination to be healthy. I take exercising very seriously now.
In a bicycling newsletter I just got there were two different powered bicycles featured. I thought "what's the point of that, you don't get exercise that way!"