If you have a long commute that consists of sitting on a bus, train or car, it may be time to think differently. A new study found that biking to work reduces the risk of cardiovascular disease, cancer and all causes of mortality. So, if you want an easy way to make a big improvement in your health, jump on your bike the next time you head to work.  
Cycling is a great way to stay fit, but only if you're careful. A recent study from JAMA shows adult biking injuries are on the rise, especially in men over 45 years old.