Active Transportation keeps you thin

Findings: Walking or biking is a good means to keep you thin.

While the study was done on school age males, I would wager that the same conclusion would be true had it been done on walking to shop, church, or anywhere else.

Obesity - Active Transportation to School Over 2 Years in Relation to Weight Status and Physical Activity:

"Boys who actively commuted to school had lower BMI (p<0.01)>Discussion: Walking and cycling to school may contribute to preventing excessive weight gain, or leaner children may walk or cycle to school."

Take away: Exercise is valuable and even small amounts is probably worthwhile. Make the resolution to walk and bike more. You will be glad you did.