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I usually go on a 10 km slow jog before breakfast on rain-free mornings.
I run on paved roads for about an hour and a half at a conversational pace.
The flat, uniform surface places little strain on my heart or legs, and
the primary function of this exercise is to provide time for thinking.
Jogging on asphalt is, in effect, an extension of everyday life.
Recently, I added a new component to my routine: walking up and down ski slopes within the resort. The route takes about 30 minutes and follows double tracks with grass and scattered rocks. Especially when descending, I must choose where to place each foot instantly. The brain processes sensory input, makes a decision, sends signals through the nervous system, and the muscles execute the movement. This rapid cycle of perception, decision-making, and action occurs continuously.
With aging, not only do muscle strength and endurance decline, but so does the speed of these decisions and reactions. Slower responses increase the risk of falls and directly affect quality of life. Therefore, walking over irregular terrain provides a crucial stimulus that paved roads cannot. This represents the “extraordinary” element, and it may be one reason people are drawn to mountain trails.
Why do people climb mountains?
One answer may be that walking on unmaintained paths helps slow down the effects of aging. This may explain why the mountain-hiking population still has a high proportion of older adults. While walking or running on asphalt develops everyday endurance, mountain trails function as a training ground for decision-making under variable conditions.
In other words, asphalt represents the “everyday thinking space,” while mountain trails represent the “extraordinary decision-making space.” The repeated choices required in this non-routine environment naturally stimulate the brain and body and are naturally sought after as a way to resist aging.
Local authorities sometimes pave or stair-step trails to improve safety, but these modifications are often unpopular with hikers. Safety may be less important to them than the sense of non-routine experience. Stairs impose a fixed rhythm, removing the need to choose each step. Hikers seek the freedom to decide where to place their feet and to exercise their rapid decision-making skills. Perhaps trail management could benefit from considering this perspective.
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