Zing!
September 17th, 2008
When was the last time you felt that zing in your step? Sitting in front of a TV devouring a bag of chips? Or, when challenging your strength, endurance, eye-hand coordination, or capacity to build or create. It’s in our wiring to run, to lift, to hike, to climb, and work with our hands. Motion thrills us. We can become drenched in a glow of pleasure and satisfaction when we solve complex problems with our bodies.
From our earliest beginnings, we have scavenged, foraged, hunted, and migrated. We’ve populated every climate and terrain — a feat no other species can claim. For tens of thousands of years we beat unfathomable odds — defeating ice, torential rains, droughts, predators, mountain ranges, and raging waterways. How? By flaking stones, hollowing tree trunks, throwing spears, cutting branches, gathering fruits, mending hides, tying knots, and building fires.
We were groomed by natural selection and the forces of nature not only to survive, but to thrive in lands of scarcity, unpredictability, and danger. 2 million years of it. We’ve populated lands as varied as the savanna’s of Africa, the deserts of Arabia, the rain forests of Indochina, the frozen arctic ice scapes of Siberia and Alaska, the vast open plains of the Americas.
Today, however, we can spend months with our only physical challenge being a couple dozen daily walks to and from our refrigerators, cars, and computer screens. We can migrate from Detroit to Hong Kong in a comfortable 72 degrees, never to sweat, freeze, or feel a single raindrop moisten our skin. No one wants to turn back the time and return to the hardship and strife of our ancestors. Yet, has something been lost to us living in a world so stripped of physical challenge?
Neuroscientist Kelly Lambert has theorized that what we’ve gained in convenience we may have lost in activities that boost psychological resilience. Our brain’s reward circuitry exhibits far more activity when we expend effort to obtain a reward, than when there’s no expenditure of effort at all. Both physical and mental effort strengthens our brain’s reward-pleasure circuitry. Although we crave leisure, we are truly happier when engaging complex challenges.
Our brain’s pleasure/reward circuitry is dependent upon a neurotransmitter called dopamine and its corresponding dopamine receptors. When we exert ourselves in anticipation of that sought-after reward, happy dopamine pours into the system. This neuro-activity is what brings about that feeling of self-satisfaction. When we live a life that requires less and less physical effort, our dopaminergic system shrinks. Our reward circuitry fires less often and with less zing, perhaps making us more prone to depression, anxiety, and day-to-day numbness
You want to give your life a boost? Seek out activities that challenge and engage both your mind and body. Rock climb. Canoe. Garden. Take up pottery, tennis, woodworking, or slight-of-hand magic. Buy a motorcycle and let the wind blow across your face. Baby, we were born to run.
Bruce Springsteen, Born to Run