Gas is $3.19 a gallon. By riding my bike to work just 2x a week I will save about $70 a month in gas. Even if I can only commute for 6 months out of the year that is $420 in savings.
Today I burned about 1000 calories. At 2x a week that is 8000 calories a month and 48,000 calories in 6 months. That is almost 14 pounds of body fat! Woo hoo!
Calories burned -1000
Time spent at the gym -0
Gas stations passed with no fuel purchased- 4
Pollutants pumped into the air by my car -0