Why do we unite behind sports

Ever wonder why we hold our breath watching people we've never met?

I explore why we can't look away from sports — the World Cup, Wimbledon, the Tour de France — and what it really says about us as viewers.

But there's another side of sports I know intimately: the one without cameras. As a mother to two kids who play international tennis, I've lived the 5 a.m. practices, the quiet car rides home after a loss, and everything that never makes the highlight reel.

Turns out, what we're watching isn't the athlete. It's ourselves.