A study from the University of East Anglia and the Centre for Diet and Activity Research finds that people who switch from commuting by car to biking or walking improved their overall well-being. Researchers examined data from 18,000 commuters in Britain, collected by the British Household Panel Survey. They looked at mental health indicators such as feelings of worthlessness, sleepless nights, the ability to face problems and unhappiness. People who walk or cycle to work reported better concentration and lower levels of stress, compared to people who drive a car.
— source treehugger.com