>>7618424This is just a cursory list of the benefits of fitness. (I didn't even delve into the psychological benefits and helping to alleviate physiological depression.) Obviously, the benefits to fitness are too numerous to summarize in one post, let alone an entire essay.
>How many things last longer when you exert them as opposed to when you don't use them?This is true regarding hyaline cartilage - particularly knee, hip, and shoulder cartilage which commonly erode from excessive use. Also, eating a high caloric diet, which is common to fitness enthusiasts, increases oxidative stress on the body. This is probably why there is some truth to the claim that individuals who have low calorie diets and/or periodically fast tend to live longer lives relative to people who eat more.
>Think about it, exerting yourself will make you live longer?It might be more correct to say that fitness will prevent you from dying sooner, since the total number of days a person will live is largely predetermined by genetics. For example, say a person is genetically predisposed to live 100 years. You can start subtracting days, months, years, decades, etc. depending on lifestyle choices, diet, drug consumption, environmental factors, etc. (Obviously, if you have a genetic disorder [e.g. hemophilia], certain medications [clotting factor] can extend your life beyond your genetic age.)
Fitness is not a scam. The overall score of fitness is a net positive. At a minimum, walk 3 times a week and stretch for 10 minutes afterwards; do some pushups, situps, pullups, squats and deadlifts once or twice per week. Fitness is not a scam. Crossfit is a scam.
