 According to a vigorous study recently published in the British Medical Journal, overall mortality among bike commuters is significantly lower than among people who don't bike or walk to work. The data came from more than 260,000 British workers between the ages of 40 and 69, whose health outcomes were recorded over five years. Among bike commuters, the likelihood of developing or dying from heart disease was about half that of sedentary commuters. Bike commuters were also 45% less likely to develop cancer and 40% less likely to die from it. Cars produce 0.97 pounds of pollution per mile annually. Bikes produce none. Bikes are also up to 50% faster than cars during rush hour. Not only does riding a bike help combat noise pollution, which affects wild animals, but results in less roadkill too. People who bike to work have better blood pressure, insulin levels, and triglyceride levels reported feeling greater feelings of freedom, relaxation, and excitement than car commuters.