WHEN DID I GET OLD

II KNOW  I AM ONLY 53 BUT I FEEL LIKE  AN OLDER MEN.IS THIS  DUE TO WHEN DOING KARATE  I AM THE OLDEST BY A LONG SHORT I EVEN JOKE I AM THE GRANDAD OF THE CLUB PLUS WHEN TRAINING NOW I HAVE TO GO SLOWER AS I RUN OUT OF  STEAM QUICKER AND IF I GET A BRIUSE MSPRAIN IT LASTS AGES.WHEN YOU WERE YOUNG YOU NEVER  THOUGHT  YOU  WOULD  GET THIS WAY ,SO TIME TO GIVE MYSELF  A  KICK UP THE ARSE AND GET ON WITH  LIFE.