I have read the first two chapters of the book Coach suggested. As a kid I was active, wandering the hills around the area where we lived, playing the the creek behind our house, building a dam on the creek to deepen it in one area. There were no "sports" for girls in my school years unless you count cheerleading. But, I marched miles in band every year. I hiked all over the mountains hunting with my dad and later husband. I didn't "join" an excercise group until after I retired. I have found I enjoy the activilty and the socialization that comes with the group.