An unappreciated way walking boosts mood is through the pleasure derived from resting after extended physical exertion – in a warm bath, or simply sitting in a comfortable chair.22 The great British philosopher Bertrand Russell remarked that ‘I used, when I was younger, to take my holidays walking. I would cover twenty-five miles a day, and when the evening came I had no need of anything to keep me from boredom, since the delight of sitting amply sufficed.’23 While the relationships between mood and walking are not straightforward, the emerging findings do suggest that regular walking has
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