Optimizing Sleep Maternal-Offspring Bonding and Sleep in the Maternity Ward

Inclusion Criteria: * Maternal inclusion criteria: * Mother over 18 years of age; * Mother for whom vaginal delivery is planned * Mother who has chosen to breastfeed exclusively; * Mother who has a single pregnancy; * Mother with no history of sleep disorders. * Mother able to understand, read and speak French or, failing that, who has someone in her immediate circle who can understand, read and speak French; * Mother affiliated to the social security system; * Having signed the consent to participate in the study * Newborn inclusion criteria: * Newborns born at term, i.e. ≥ 37+0 weeks of amenorrhea (SA). Exclusion Criteria: * Non-inclusion criterion relating to the mother: * Mother for whom a cesarean section is scheduled * Mother under legal protection ; * Mother presenting with an acute or chronic non-stabilized condition; * Mother with a history of sleep disorders; * Mother exposed to substances that can alter sleep (alcohol, sedative drugs). Secondary exclusion criteria: * Mother who gave birth by emergency cesarean section * Mother with a major post-partum medical complication requiring follow-up in a unit other than the maternity unit; * Newborn with a major medical complication requiring follow-up in a unit other than the maternity unit.