Because your ankles have very few large muscle groups around the joint, it is difficult to significantly enlarge your ankles. I do have ankle exercises in all three of my books. In Strong Women Stay Young, I outline Toe Stands and Heel Stands. In Strong Women Stay Slim, I outline the Calf Raise (similar to the Toe Stands). And in Strong Women, Strong Bones, I outline similar ankle exercise as described in my first two books as well as Push and Pull Toes, a wonderful seated ankle exercise. All of these ankle exercises will help to improve the flexibility and strength of the ankle joint and give you wonderful toned calf muscles.