From eating healthy diets to preparing the incubator, there are many things recommended to women to do before they get pregnant to have a healthy baby. But it takes two to make a baby, so what about the men? Recent research has shown that genes encoded in men’s sperm can be modifed by the environment in which they were developing, and those modifications may affect the developing child. In this episode, Dr. Kirtly Parker Jones gives insight into some of the things that men can do to prepare for pregnancy.