It aint the age, its the mileage. Im only 50 and half crippled.My uncle was 65 years old when I was about 25 and his girlfriend was 24.
She was Fit and super good looking.
As he was also most thought he was in his mid 40's he still raced his cars on the circle track and the straight line 1/4 mile.
You are only as old as you feel.