The less fat we have, the better the circulation. If thats true, then why do we have the optimum weight chart. Instead of that, why shouldn't everyone aim for being as skinny as possible. In my chemistry class, Mr. Young, my teacher and a marathon runner prepares himself for the upcoming marathon by eating no fat but running all the time, he got so skinny, it was unbelievable. But probably was good for his health. What do you think? Thx.