Daniel Goleman, author most famously of “Social Intelligence: The New Science of Human Relationships,” wrote this sweet piece for yesterday’s New York Times health section citing scientific studies that show how loving relationships stimulate physiological responses, keeping us happier, healthier, living longer lives.

Goleman writes: “…my hostility bumps up your blood pressure, your nurturing love lowers mine. Potentially, we are each other’s biological enemies or allies.”

Do your best friends keep you physically healthy? When did you last place some distance between yourself and a friend who wasn’t good for you?