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For many years, both doctors and the general public believed that exercise was bad. This made the most sense, because people who did heavy manual work obviously died earlier than people who were rich or at least well-off who didn't work at all or did office work. The answer to this question was so self-evident that no one bothered to do any research until relatively recently. The first investigation that bombed the The foundations of the belief that inactivity is better for health began in the late 1940s. Then, a doctor single-handedly tried to completely change our belief about the importance of activity in health. A doctor in his own right, doing research essentially in his spare time, he did not have the means to produce scientific data as produced today that cost millions or even billions of euros, but he had a very sharp mind. All he did was record heart attacks in people working on London's city buses at the time. If you went to work on London's city buses in the 1940s and 1950s, you were randomly assigned to do one of two things: either the driver's job, or the ticket collector's job. I am so old that I have overtaken collectors on buses, mainly on urban routes in the periphery of Greece, especially in the Cyclades in the 90s. While the drivers are almost permanently seated throughout during their eight-hour shift, ticket collectors move around the bus constantly to sell tickets. So here we have a natural experiment. Thousands of people, who eat practically the same things, live exactly the same way, live in the same urban areas, come from the same socio-economic group, and are generally the same in all the factors we can imagine affecting life expectancy even today, they are randomly divided into doing a sedentary job or a constantly moving job. The result of the study today is almost taken for granted. Drivers were 50% more likely to develop coronary heart disease, the heart disease that leads to heart attacks, than debt collectors. What appears to be self-evident today, was actually scientifically founded by Jeremy Morris in the 50s from this very study. He himself had the pleasure of seeing how his study changed the medical world because he lived until 2009, when he died at the age of 100! Even months before he died, he made it a point to exercise at least half an hour a day on his bike or by walking. Here's a scientist who didn't just stop at words! But exercise is one of the most effective ways to burn fat. But which exercise burns the most fat? Walking, cycling or swimming? If you've come this far you definitely want to know. Click on the video now displayed to my right to view. I remind you that by pressing the like button and sharing the video with people who will find it interesting, you help me a lot. Thank you very much.

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