Driving in traffic is harrowing for both brain and body. The blood of people who drive in cities is a stew of stress hormones. The worse the traffic, the more your system is flooded with adrenaline and cortisol, the fight-or-flight juices that, in the short-term, get your heart pumping faster, dilate your air passages and help sharpen your alertness, but in the long-term can make you ill. Researchers for Hewlett-Packard convinced volunteers in England to wear electrode caps during their commutes and found that whether they were driving or taking the train, peak-hour travellers suffered worse stress than fighter pilots or riot police facing mobs of angry protesters.
via The secrets of the world’s happiest cities | Society | The Guardian.
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