You’re not getting any younger. But new research suggests that aging doesn’t necessarily mean life gets worse — or that things will go downhill for your mind or body. In a Yale University study , almost half of older adults above age 65 actually got sharper mentally, stronger physically, or both — and a key characteristic made a major difference. Over 60 million adults are now over the age of 65 in the US, representing about 18% of the population. And they’re living longer too — the death rate