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Crunches builds abdominal muscle but body weight is affected only by cardio.

swader999 5y ago
Body weight is affected mostly by what you eat. Muscle mass from lifting is a great way to stay lean. Cardio helps too.
bedobi 5y ago
Hate to be that guy, but that's wrong. Body weight is determined by calories in vs calories out. Eat less calories than you burn, body weight goes down, eat more, body weight goes up. Body composition is determined by exercise and diet. Lift weights and get enough protein, muscle mass increases. Run marathons and don't get enough protein, muscle mass decreases. In general, compound movements like squats, deadlifts, pullups, presses etc should be preferred over isolation movements like crunches. Crunches are kind of a pointless exercise, even for working out your abs.
- ampdepolymerase 5y ago
  You cannot change the latter without having some effect in the former because of basic mathematics of ratios.
- than3 5y ago
  Hate to be the bearer of bad news but what you are saying here is for the most part only correct for a very small subset of the population. Your current weight is a functional aggregate of the surplus calories which consists of many factors that can't immediately be measured (yet). The "Calories in, Calories out" belief which is based on very sketchy evidence (i.e. try tracking down where that came from some time) breaks down for anyone suffering from chronic obesity. Body Composition - (i.e. Body Fat percentage), is determined by exercise, diet, and overall health which may include factors like inflammation (allergies), liver function, vitamin levels, thyroid levels, whether they have been poisoned (lead, mercury) etc). Most people have one or more of these issues and metabolism is dynamic. It can speed up or slow down based on gene expression which is often influenced in part by exercise but mostly food (diet). The assumptions you make about exercising aren't necessarily true when you have a health factor and that may not be immediately determinable, or even diagnose-able in some cases. I've known quite a few people that were picture perfect health medically (according to tests) except for uncontrollable weight gain, and had to go through multiple strict elimination diets to identify the culprits. Some people will simply gain weight regardless of the calorie count if they are sensitive to a type food (or additive like canola/soy oil). There are tons of additives in commercial food these day that aren't even necessarily listed. As an example, commercial pork doesn't brown correctly when cooked compared to meat you spice and grind yourself and its not MSG. Pork you grind and cook yourself looks almost like the light brown of a breaded chicken steak, compare that with the dark browning you get from commercial pork breakfast sausage. Body conditioning is important, but exercise plays a very small role compared to overall diet. I know people that have gone on 800-1000 calorie/day diets (medically supervised) for half a year and consistently maintained or even gained weight so the whole idea of calories in calories out is just ludicrous.
  - bedobi 5y ago
    Do you worry about chemtrails too?

Body weight is affected mostly by what you eat. Muscle mass from lifting is a great way to stay lean. Cardio helps too.

Hate to be that guy, but that's wrong. Body weight is determined by calories in vs calories out. Eat less calories than you burn, body weight goes down, eat more, body weight goes up. Body composition is determined by exercise and diet. Lift weights and get enough protein, muscle mass increases. Run marathons and don't get enough protein, muscle mass decreases. In general, compound movements like squats, deadlifts, pullups, presses etc should be preferred over isolation movements like crunches. Crunches are kind of a pointless exercise, even for working out your abs.

ampdepolymerase 5y ago
You cannot change the latter without having some effect in the former because of basic mathematics of ratios.
than3 5y ago
Hate to be the bearer of bad news but what you are saying here is for the most part only correct for a very small subset of the population. Your current weight is a functional aggregate of the surplus calories which consists of many factors that can't immediately be measured (yet). The "Calories in, Calories out" belief which is based on very sketchy evidence (i.e. try tracking down where that came from some time) breaks down for anyone suffering from chronic obesity. Body Composition - (i.e. Body Fat percentage), is determined by exercise, diet, and overall health which may include factors like inflammation (allergies), liver function, vitamin levels, thyroid levels, whether they have been poisoned (lead, mercury) etc). Most people have one or more of these issues and metabolism is dynamic. It can speed up or slow down based on gene expression which is often influenced in part by exercise but mostly food (diet). The assumptions you make about exercising aren't necessarily true when you have a health factor and that may not be immediately determinable, or even diagnose-able in some cases. I've known quite a few people that were picture perfect health medically (according to tests) except for uncontrollable weight gain, and had to go through multiple strict elimination diets to identify the culprits. Some people will simply gain weight regardless of the calorie count if they are sensitive to a type food (or additive like canola/soy oil). There are tons of additives in commercial food these day that aren't even necessarily listed. As an example, commercial pork doesn't brown correctly when cooked compared to meat you spice and grind yourself and its not MSG. Pork you grind and cook yourself looks almost like the light brown of a breaded chicken steak, compare that with the dark browning you get from commercial pork breakfast sausage. Body conditioning is important, but exercise plays a very small role compared to overall diet. I know people that have gone on 800-1000 calorie/day diets (medically supervised) for half a year and consistently maintained or even gained weight so the whole idea of calories in calories out is just ludicrous.
- bedobi 5y ago
  Do you worry about chemtrails too?