When your grown son, who is half your age, invites you to hike the same mountains where you hefted him and his pack many years ago, see it as payback. It’s youth saying to age, “Thanks, Pop. Now let ...

Your legs do a lot for you. Whether you’re walking around on your feet all day or moving through a power yoga sequence, your legs support and carry you--literally. To make your day-to-day activities ...