Them looking older is probably just the gaunter look associated with endurance sports (low muscle mass, low body fat). It's especially noticeable in the face, w

Them looking older is probably just the gaunter look associated with endurance sports (low muscle mass, low body fat). It's especially noticeable in the face, where cheek & jaw bones will stand out. I happen to like the look; gives people's faces more character. Sun damage probably also contributes.