This is a great article about keeping "our brains fit and sharp"! Naturally, Dr. Sinclair's book is on the reading list noted!
https://www.theguardian.com/news/2020/f ... althy-mind
I quite like this paragraph in the article:
"In his essay on ageing, De Senectute, Cicero says there are four reasons why people write off old age: it stops you working, it makes your body weak, it denies you pleasure and every day is one step closer to death. Then he shows why each argument is wrong. “The old retain their wits quite well,” he notes, “so long as they exercise them”."