The counter-intuitive effects of incidental social interactions on wellbeing

In his book Friends, renowned evolutionary psychologist Robin Dunbar highlights the plethora of studies demonstrating the psychological and physical benefits of close social ties. Aside from emotional support and social fulfilment, friendships also link to longer life spans and reduced risk of disease, and play a role in psychological well-being.

As it turns out, though, connection and the benefits that accompany it are not limited to our closest family and friends. Weak ties — acquaintances, strangers — can also provide significant benefits.

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