Sleeping apart from one's partner (a "sleep divorce") helps preserve sleep quality and relationship harmony, without sleeping in separate rooms harming the relationship.

noli's read

This approach, often called a "sleep divorce," is based on a well-documented biological reality: according to a survey by the American Academy of Sleep Medicine (AASM), nearly a third of couples choose to sleep separately to optimize their recovery. Observational research, notably conducted by the University of Pittsburgh, demonstrates that partners' sleep is 30% interdependent, which validates the idea that the other's movements directly alter our night. Several observational studies associate quality rest with better mood, greater patience, and less daily tension. However, the assertion that sleeping together does not make one happier should be nuanced. An observational study from the University of Hertfordshire reveals that partners who maintain physical contact during the night report greater relationship satisfaction. Scientific evidence shows there is no single rule and that this logistical choice depends above all on the level of nocturnal noise or movement tolerated by each individual.

the sources

No named source held this one up — that absence is part of the verdict.