Description
The author is discussing the benefits of carrying a baby close to the body. They state that babies are happiest when they are close to their caregivers.
Babies are happiest closest to their caregivers: For the majority of human history mothers have carried their babies close to their bodies, not only to leave their hands free for the multi tasking all mothers perform but, as research has shown, because babies are always happiest when in close proximity to the bodies of their care givers.