From this weekend’s New York Times:
Are we fighting thousands of years of evolutionary history and the best interests of our bodies when we sit all day?That question is at the core of a fascinating new study of the daily lives and cardiovascular health of a modern tribe of hunter-gatherers. The findings strongly suggest that we are born to be in motion, with health consequences when we are not
You can read the abstract of the original research here.
I do yoga and the 10,000 steps a day program.
peakmemory 
Although not on point, I wish we could just get rid of cars altogether!
I agree!
Although I have no scientific basis to support this observation, years ago when in the Czech Republic, I noticed less obesity than in the US. More people seemed physically fit. I attributed this to the lack of cars. People walked or biked everywhere. They did not have access to cars like we do.