I believe this is a very useful tool for evaluating all the various health claims you encounter:
Carl Sagan’s Baloney Detection Kit
The health world is currently plagued by misinformation and pseudoscience. But with the Baloney Detection Kit, it should be easier to separate fact from fiction.
Many people who look fit may be anything but. There is a growing phenomenon of “Tofis”, people who are “Thin on the Outside, Fat on the Inside”. It’s like a more insidious form of obesity, since even the sufferer may be under the illusion that they are healthy when they are actually very fat on the inside. This outwardly hidden excess fat is stored in and around many vital organs which can clog the arteries and lead to heart disease, besides causing many other serious health problems associated with obesity.
This underscores the reason everyone needs to exercise, which is by far the best way to ensure our metabolism doesn’t go awry(besides eating healthy). It still amazes me how often I encounter people who believe “skinny people shouldn’t exercise”, which is usually aimed at me due to how slim I am.
Above all, and it deserves repetition, fitness should be a lifestyle, not an activity.