We can boost our immune systems by strengthening our social networks and decreasing stress.

When you strip away the genre differences and the technological complexities, all games share four defining traits: a goal, rules, a feedback system, and voluntary participation.

Urgent optimism is the desire to act immediately to tackle an obstacle, combined with the belief that we have a reasonable hope of success.

Things like depression and obesity are global challenges.

My favorite part of running is the thinking time.

Games are unnecessary obstacles we volunteer to tackle.

When we play a game, we tackle tough challenges with more creativity, more determination, more optimism, and we're more likely to reach out to others for help.