Richard Bribiescas, professor of anthropology and deputy provost at Yale University. There is evidence that these men are less likely to suffer from heart attacks and prostate cancer, while a study in 2008 found that men with high metabolisms were around 50 per cent more likely to die in a given year than those whose bodies burned up less energy at rest.
http://www.telegraph.co.uk/news/2016/10/31/chubby-older-fathers-are-more-attractive-to-women-and-live-longe/