To walk is to move on foot by putting one leg in front of the other, always having one foot on the ground; a walk is a period of going somewhere or exercising this way.
From Old English “wealcan,” meaning “to roll or toss,” which shifted meaning over time to “move about.” The modern sense of walking on foot became fixed in Middle English.
Humans are unusual animals because we walk on two legs, freeing our hands for tools and gestures. Even a short walk can change brain chemistry, improving mood and creativity without you noticing why you suddenly feel different.
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