Sleeping with a partner: scientists explain why it's not good for you

American scientists from the University of Michigan conducted an experiment on mice and concluded that sleeping alone was still healthier than sleeping with a partner.

The study was published in Current Biology. The researchers used wireless neurophysiological devices to monitor several rodents simultaneously throughout the day.

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They noticed that the mice craved physical contact with each other before falling asleep: they snuggled up to other individuals. Scientists called this phenomenon somatolongia, which is a motivation for prolonged physical contact.

At the same time, the animals had a choice: to sleep together or alone (they were equipped with comfortable individual sleeping places). Despite this, the rodents still chose to sleep together with other individuals. The problem is that in this case, the mice most often disturbed each other's sleep - as is the case with humans.

On the other hand, the scientists found that the mice that slept together showed synchronization in several neurophysiological parameters, including sleep onset, wakefulness, and REM sleep. It is noteworthy that during the so-called rapid eye movement phase, synchronization of rhythms was recorded in co-sleeping brothers, but not in females or mice unfamiliar with each other. The researchers concluded that the feeling of safety in sleep controls the degree of synchronization.

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