How does exercise tone your body?
Friday, August 13th, 2010I’m just curious to know what goes on inside your body that makes you burn fat when you exercise. Yes, I know exercising builds muscle, but does your body burn fat while exercising because it uses it to make energy or something??
And I’m only a student, so easy words please.
yes your body uses fat to make energy and repair the damaged muscle from the workout.
Edit: yes it does your body can turn fat into protein the same way it turns fat back into carbs in order to make energy.
Edit: Take a biology class and learn it yourself. Your body can turn carbs into fat and vice versa. your body can also make protein and break down protein to make carbs to use as energy or store as fat.
Step 1: The break-down of triglycerides
To be used for energy a triglyceride needs to be broken down into its basic units: one molecule of glycerol and 3 molecules of fatty acids. This process is called Lipolysis.
Step 2: Conversion to acetyl CoA
Although they both have the same outcome, the glycerol and fatty acids each follow a different path. Their goal is to enter the Krebs Cycle, but first they must get converted to acetyl CoA.
Step 2a: Glycerol to acetyl CoA
Glycerol, which is a basic sugar, follows the glycolytic pathway (glycolysis). During this process it is converted into pyruvic acid. For entry into the Krebs Cycle, the pyruvic acid must be converted to acetyl CoA.
Amino acids(from proteins) can be converted to pyruvate or pyruvic acid. Some are converted into acetyl CoA. Others are converted into acetyl CoA through a previous step of acetoacetyl CoA. Some are converted into one of the chemicals in the cycle, oxaloacetate. Others are converted to other chemicals that are a part of the citric acid cycle. The nitrogen that is removed from the amino acids in this process is ultimately converted to urea and excreted in the urine.
Anabolism (Greek "mound" from ana = upward + ballein = "to throw") is the set of metabolic pathways that construct molecules from smaller units.[1] These reactions require energy. One way of categorizing metabolic processes, whether at the cellular, organ or organism level is as ‘anabolic’ or as ‘catabolic’, which is the opposite. Anabolism is powered by catabolism, where large molecules are broken down into smaller parts and then used up in respiration. Many anabolic processes are powered by adenosine triphosphate (ATP).[2]
Anabolic processes tend toward "building up" organs and tissues. These processes produce growth and differentiation of cells and increase in body size, a process that involves synthesis of complex molecules. Examples of anabolic processes include the growth and mineralization of bone and increases in muscle mass.

