A groundbreaking exploration of how fatherhood transforms men's brains, bodies, health, skills and relationships

A groundbreaking exploration of how fatherhood transforms men's brains, bodies, health, skills and relationships, drawing on one of the world's only longitudinal studies of men's brains as they become fathers. Revelations include-

. Fathers' brains shrink and their testosterone drops
. Fathers undergo a host of hormonal changes once thought only to affect women
. Fathers can suffer post-partum depression but enjoy better long-term health
. Fathers make for better managers and their style of play makes their kids more resilient
. In the West fathers typically get less sleep than mothers, but mothers get worse sleep than fathers
. Dads who do more housework are generally happier
. A majority of women prefer 'dad bods'