Celebrations with family and friends are integral to a life well lived. Every once in a while, we need to remind ourselves that life is sweet and we are lucky to be alive. And throughout human history, we’ve done that through feasting. The very act of eating is a celebration of life, and when we celebrate important events, we do so with a feast. Any diet that does not acknowledge this fact is doomed to failure. We eat cake on our birthday. We have feasts on holidays like Thanksgiving and Christmas. We prepare wedding banquets. We go to a nice restaurant on our anniversary.