We had to be mentally and physically alert because there was no plumbing and no electricity, and we had to be careful or we might be eaten by some larger predator. Now we have the problem known as 'homo sedentariu,' and we haven't had time to develop couch potato genes. The study also may be a warning to people eager for early retirement and a leisurely existence. Activity is desirable. I really don't want people to think they have to go take a class in Japanese opera if they hate it, but everybody likes something or other.
People are capable of learning at any age, and learning is good for the brain.
All rights reserved. All rights reserved.