Did you know that your belly could help your golf game? I have often rationalized that while the size of my equator is on the increase, it must be beneficial — perhaps better weight shift or a lower center of gravity. Alas, there has been no significant change. But wait, almost every week on the PGA Tour, we see a new player using his stomach to lower scores. It’s not sit-ups or crunches or a belt with a battery pack. It’s a “belly putter”. Yes, a longer shaft on the putter is anchored to your mid-section by your left hand …