Ageing and exercise

I never liked to exercise.  Who knew it is so important as we age.  My knee feels so much better having started the exercise at the gym. Then there is the mental exercise.  I couldn't find my gym locker without much thought.  Someone told me to put a ribbon on it next time. I was also glad to hear the locks don't always work .  Don't be nervous, just tell them at the desk.  I am sure I would think I had the wrong locker.  Then I started down the wrong hallway.  The Men's locker room hallway.  Ahh yes, glad someone stopped me. If nothing else, I am now on the right path, besides going to the correct locker room.  Ask me in a few months if I am continuing.  I have high expectations that I will.