While I was sitting at a restaurant in Barcelona, Spain, overlooking the sprawling La Rambla, I could see people of all ages walking by. Those who were Spanish appeared to be slim and activ,e even those who were elderly. By contrast, if you walk into a Walmart in the U.S., you may see even young people maneuvering the store on scooters or walking with a cane. I didn't see … [Read more...]