I think it's more important to be fit so that you can be healthy and enjoy activities than it is to have a good body.
Winston Churchill was not entirely British. His mother was American, making Sir Winston part Iroquois Indian.
The child gets two confusing messages when a parent tells him which is the right fork to use, and then proceeds to use the wrong one. So does the child who listens to parents bicker and fuss, yet is told to be nice to his brothers and sisters.
