The outdoor lifestyle is the quiet rebellion against this containment. It is the deliberate act of stepping out of the bubble and into the flow.

Biologist E.O. Wilson coined the term "biophilia," which suggests that humans have an innate tendency to seek connections with nature and other forms of life. When we ignore this instinct, we suffer from what author Richard Louv calls "Nature Deficit Disorder." Symptoms include anxiety, depression, and difficulty concentrating.

Here are some outdoor activities to try: