Studies have shown that behaviors are contagious and that our social networks can influence obesity, anxiety, and overall well being.
“I argue that the most powerful thing you can do to add healthy years is to curate your immediate social network,” said [Dan Buettner, a National Geographic fellow and author who studies the health habits of people who live in so-called blue zones], who advises people to focus on three to five real-world friends rather than distant Facebook friends. “In general you want friends with whom you can have a meaningful conversation,” he said. “You can call them on a bad day and they will care. Your group of friends are better than any drug or anti-aging supplement, and will do more for you than just about anything.”