Dear Doctors: I enjoy lifting heavy weights. It makes me stronger and helps me feel energized. The trainer at my gym says that, because I’m 84 years old, it’s not a good idea. He’s been after me to ...

For years, we’ve been bombarded by the trope of aging gracefully—staying small, moving slowly, playing it safe in the gym and in life. But a growing number of women are rejecting that tired script and ...