A quarter of British young adults walk "only when necessary," resulting in less than 5 minutes of activity per day, according to a new study by health insurance company Bupa. The survey, conducted on 2,000 British adults, focused on young adults between the ages of 18 and 24. The researchers found that, although the British Heart Foundation recommends a minimum of 30 minutes per day spent walking, the average woman walked only 12 minutes per day, and the average man walked only...

