Have you ever noticed that you sleep better and feel happier when you have a busy social calendar? That’s because engaging socially helps your body relax. The vagus nerve- which connects the brain stem to the heart, lungs, and intestines- slows heart rate, lowers blood pressure, and calms the body. Part of this nerve, called the myelinated vagus, links the brain nerves to the face, allowing facial expressions to influence stress response. When you tune in to social cues- the smiles and laughter of your friends- these nerves send calming signals to your body.
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