As if the financial costs of driving to work weren't enough (i.e. gas & maintenance, parking permits, and stressful traffic), there is now a health cost! Fortunately, "active commuting" has none of those costs...and is healthier! A win-win, if you are able!
Read it up:
UNC study: People who bike or walk to work are more fit, less fat than drivers
Trying to get fit but can’t work it into your daily schedule? Incorporating even relatively short bouts of exercise into a daily commute appears to deliver significant rewards, according to a new study from the University of North Carolina at Chapel Hill. Researchers looked at the health and fitness levels of active commuters – people who walk or ride a bike to work at least part of the way – compared to those who drive or take public transportation.
http://uncnews.unc.edu/content/view/2695/71/