book i talk about the unexpected, it is the opposite of what we showed in the picture, it shows men drinking a moderate amount of wine have stronger bones, and women drinking beer had that resulted and, i thought to myself, when i came over here, wait. men are drinking beer at football games and women are sipping wine at the bar and we have to switch now! >> heather: switch. >> gregg: wow, this is a preliminary study, correct? >> that is guide point, because the study looked at 850 people, and it gave them questionnaires. and, it said, how much did you drink? well, you know, not everyone tells the truth on a questionnaire. and, it was only for two years and it is a very small, relatively small study, over a short period of time, and, leaning heavily on questionnaires and we need longer-term studies and, there is science behind this, because, wine -- the seeds of grapes and the skin of grapes, have stuff in them, chemicals that can strengthen your bones and, beer, has silicon which strengthens your bones and, not en necessarily surprising but i