(NBC) -- Areas of the country in which more people bike or walk to work tend to have lower obesity rates.
That's according to a new report from the Alliance for Biking and Walking which looks at biking and walking trends in major cities and all 50 states.
Memphis and Detroit, which had the highest levels of obesity, have some of the lowest bicycling and walking rates.
Likewise, San Francisco and Oakland, California, which boasted the lowest obesity rates, had a large percentage of commuters who walk or bike.
But the trend did not apply everywhere.
New Orleans, Baltimore, Philadelphia and Chicago were among the top 15 cities for biking and walking commuters, but had above average obesity rates.
Experts say despite what most people think, the report found cities and states with more cycling and walking are among the safest for bikers and pedestrians.