Why wives grow fat and beautiful when husbands die

This is a question for the sages from a friend I shall not name lest he is declared persona non grata in his home: “How come whenever a man dies, his widow grows fat, more beautiful and vibrant?”

Let’s be frank here. There is a crop of men who deserve to die. And I am not referring to brothers who are allergic to water or toothbrushes. I am not even talking about men who have this mistaken belief that the hair on certain parts of their anatomy should be preserved as game parks teeming with wildlife.