There are lots of gyms and fitness facilities around and they all seem to make money. Why are so many people fat?

When I started working out in the 80s there was one gym withing 20 miles of my house. Now there are 5 or 6. They all seem to be doing business yet people look fatter and more out of shape than ever. Do they just join the gym with good intentions and then stop going after a couple of weeks?

There are lots of gyms and fitness facilities around and they all seem to make money. Why are so many people fat?
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