BUENOS AIRES — Couples, it is assumed, sleep together — and sleeping apart is easily taken as a sign of a relationship gone cold. But several recent studies are suggesting, people sleep better alone and "sleep divorce," as the habit is being termed, can benefit both a couple's health and intimacy.

That is, if you have the space for it...

While sleeping in separate beds is seen as unaffectionate and the end of sex, psychologist María Gabriela Simone told Clarín this "is not a fashion, but to do with being able to feel free, and to respect yourself and your partner."

She says the marriage bed originated "in the matrimonial duty of sharing a bed with the aim of having sex to procreate." That, she adds, gradually settled the idea that people "who love each other sleep together."

Is it an imposition then, or an overwhelming preference? Simone says intimacy is one thing, sleeping another.