India, May 18 -- Relationship satisfaction is imperative for the longevity of a relationship. Low stress, along with physical and emotional closeness, are key markers of relationship satisfaction. The scientific community is continuously looking for factors that deepen the bond between partners.

A study published in the Journal of Social and Personal Relationships revealed one such factor: couples who sleep together and cuddle show lower stress levels, and the emotional security of their relationship improves substantially.

The study examined 143 heterosexual couples who had been together for an average of 13 years. They were asked about their sleeping behaviours and how close they slept with their partner in bed, from cuddling and spoo...