 And you can find out a lot about how you react to different foods. And it may differ from day to day. It may be that after exercise you react less or that if you have a bad night's sleep or, you know, if you're jet lagged, you may have a different reaction to an identical meal. So there's a lot of factors in play. Or, you know, certainly if you're ill, that will mix things up tremendously in terms of your response to foods. So there you have it.