Last year, while jogging outside, I met a couple from Shanghai. The wife greeted me in Chinese, and during our conversation, the husband casually remarked, "You must be in your 70s now." The wife quickly teased him, saying, "How can you say that? She's in her 50s."
Whether I'm in my 50s or 70s is beside the point. What stood out was the wife’s openness, sharpness, social awareness. She understood the delicacy of commenting on a woman's age and responded playfully, using tact and grace to gently correct her husband without causing any social awkwardness.
In contrast, the husband seemed oblivious to the social etiquette surrounding age. His comment was blunt, suggesting he might either be more straightforward or less attuned to such nuances.
The difference between the wife’s social savvy and her husband's directness also suggests that she’s still mentally sharp, showing no signs of decline.
Yesterday I ran into the wife again recently at the YMCA, where she mentioned that she no longer drives and that her husband has taken over. She admitted she's out of practice, having not driven for several years.
This reminded me of my children’s grandparents. The grandfather used to joke, "I’m unemployed at home," because the grandmother took care of everything. Sadly, the result was that he developed dementia in his 70s, while the grandmother, who stayed active, outlived him by nearly 20 years.
A Chinese saying fits this context perfectly: "脑子不用会生锈" (Nǎozi bù yòng huì shēngxiù) — "If you don’t use your brain, it will rust." This emphasizes the importance of keeping the mind active. Even at home, staying engaged and active helps delay mental and physical decline. The brain, like any tool, deteriorates when unused.
Ultimately, this reinforces a key point: staying active, even in daily small ways, can help delay both mental and physical decline in old age, keeping both the mind and body sharp through daily activities.