I'm in better shape than them

Sitting here in the restaurant on board ship, I watch the others around me. All are of similar ages, some older, some, a few, a great deal older. What I'm still reeling about is the real oldies are more sprightly than those nearer my age.

What on earth went wrong?

When did they become shells of their former selves? 

When did they just get "old and infirm"?

My only response is;

1. The staff are amazingly friendly, supportive and attentive 

2. How do they manage to cope? Admittedly, none are English, all come from the Philippines.

3. I'm doing a lot better than I ever believed.