My sister Mayela is 6 years my junior making her something like 45 years old. Most women half her age would love to be in this kind of shape. Does she work out at the gym? Is she a slave to aerobics? Her only form of exercise is swimming, walking her dogs, and the occasional game of tennis.

There was a time when I considered it my responsibility to look out for my baby sister. Now she is the first person I would turn to for help if I found myself in a dark alley with a motorcycle gang.