Gen Zers aren't lonely. They're fueling a vibrant social renaissance.

Getty Images; iStock; Natalie Ammari/BI

When Julia Nagel-Mayberry moved to Chicago in 2022, she knew only a handful of people. She was 22, had just finished college, and quickly discovered that making friends in a new city was much harder than it had been in school. When she told a coworker about her predicament, he lit up. "I have the perfect thing for you," she recalled him saying. That's when she learned about the Electric Athletic Club, a nationwide run and fitness club.

The next day after work...