For Optimum Performance & Conditioning…Fuel Your Muscles With Fat!

Part 1 of Series:

Science has long since known that the potential energy contained in one gram of fat is equivalent to nine calories, whereas protein and carbohydrates yield only four calories of energy per gram.  Given this nutritional fact it has always seemed strange that the athletic community heavily emphasizes the use of carbohydrates as a primary fuel source in preparation for and during competition.

In order to achieve peak performance and conditioning, it is essential that an understanding of basic energy metabolism first be obtained.  To give you an example of the available energy stored within the human body (in the form of body fat), consider an individual who weighs 200 pounds and has approximately 20% body fat.  When calculated, this individual has about 40 pounds of stored body fat, with approximately 160 pounds of lean body mass.  Once oxidized, each pound of stored body fat yields approximately 3,500 calories of potential energy, equivalent to about the amount of energy expended by a 150 lb male walking at a speed of 2.5 mph for 13.25 hours.  To further calculate the approximate amount of total fat energy stored by the same individual, we would simply multiply 40 pounds of body fat by 3,500 Calories/lb.  This would then yield a grand total of 140,000 stored calories of energy equivalent to approximately the same amount of calories expended by a 150 lb male walking at a speed of 2.5 mph for 531 hours!

Since body fat provides nearly three times the amount of ATP (adenosine triphosphate, the energy source for muscular contraction) when compared to protein or carbohydrates, it would only make sense to promote and encourage the utilization of body fat as the primary fuel source for muscular contractions (instead of muscle glycogen and amino acids) especially during competition.

Although this seems to be a very simple thought process, achieving the objective is not quite as easy.  The reason being is that for every pound of fat burned in the muscles, a proportionate amount of glycogen (carbohydrate) is required to be burned as well.  In other words, “fat burns in the flame of carbohydrate!”

Watch for Part 2 of this Series…Fuel Your Muscles With Fat!

The INTRAFITT Program concepts and applications are 100% valid and applicable and have been accepted entirely by the Scientific Community currently exploring the dual science of “Diet and Exercise Neuroendocrinology” and “P.N.E.I” (Psycho-Neuro-Endocrino-Immunology) and are supported by a myriad of abstract studies and published excerpts.

In strength and honor,

Will Smith AKA Thunder of the American Gladiators


Principles of Endocrine Physiology…What is an Islet Cell?

The INTRAFITT Individualized Nutrition and Exercise Program was developed and established in California- 1992 in an effort to educate individuals seeking optimal levels of health, fitness and performance on the effect that diet and exercise has on the major regulatory systems of the human body (Nervous System and the Endocrine System) and their consequential effects on the Re-Programming Aspects of the Human Body.
The INTRAFITT Program concepts and applications are 100% valid and applicable and have been accepted entirely by the Scientific Community currently exploring the dual science of “Diet and Exercise Neuroendocrinology” and “P.N.E.I” (Psycho-Neuro-Endocrino-Immunology) and are supported by a myriad of abstract studies and published excerpts such as the following taken from the text book entitled Principles OF Physiology / General Principles Of Endocrine Physiology.

This text may be purchased at:


The “primary” pancreatic hormones, insulin and glucagon are two of the most powerful metabolic regulators concerning the metabolism of body fat, the maintenance of blood glucose levels and the production and maintenance of lean body proteins. As you will discover, the insulin/glucagon axis is perhaps the most important focus in the development of safe and effective weight management, health enhancement and performance nutrition programs.

The islet cells of the pancreas are composed of 60% beta cells (b-cells), the source of insulin and 25% alpha cells (acells), the source of glucagon. The remaining 15% of the islet cells secrete the peptides somatostatin, from the delta cells (d-cells) and pancreatic polypeptide from the F-cells. The strategic location of the islet cells reflect their functional role. Insulin, glucagon and the pancreatic enzymes are secreted in response to incoming nutrients from the diet as well as from gastrointestinal secretions, which ultimately reflect the concurrent nutritional status of an individual.

Additionally, the location of the islet cells force their secretions into the pancreatic vein, which integrates at the hepatic portal vein and empties into the liver (the central organ in nutrient traffic).

Insulin and glucagon coordinate the direction of incoming nutrients from the diet via the hepatic portal vein. Insulin and glucagon also control and direct the flow of endogenous substrate (once it has been broken down and released), such as stored body fat, glycogen and amino acids, derived from the protein structures of the body.

Since the liver is the first organ to come in contact with insulin and glucagon (once these hormones have been released by the islet cells), it is therefore exposed to higher concentrations of these hormones, then are the peripheral tissues (muscle tissue and adipose tissue). Consequently, the liver can very efficiently modulate the release of these two hormones to the peripheral tissues, therefore allowing for more or less of the hormones to circulate throughout the body.

NOTE: Due to the liver’s high exposure to insulin, it should be clear as to why fatty deposits can develop so efficiently within the liver thus contributing to the very prevalent condition know as Fatty Liver Disease.

Because Insulin and glucagon are secreted together and act reciprocally it is perhaps more beneficial to focus on the ratio of insulin and glucagon concentration in blood plasma, rather than the absolute concentration of each hormone respectively.

You can reach me with your questions at or visit us at

Meet William Smith of INTRAFITT

Yesterday I posted the following blog to my INTRAFITT Facebook page. Today, I would like to share this blog again and include a video that I produced about the INTRAFITT program. I am sure my passion will come through!!!

I posted: “Kudos to INTRAFITT client Jeffrey W for his success on the INTRAFITT program. In 8 months time, eating 5 meals a day, weight training 2x a week and doing an hour of cardio 5 days a week plus keeping his daily journal… he dropped 21% body fat! He also lost 53 pounds of fat and gained 14 pounds of lean mass and he is 67 yrs old!!!!! Now he has reprogrammed his body to continue to get leaner for life! Awesome job Jeffrey!”

This is the type of result you can expect from the INTRAFITT Program! I wanted to share my video with each you. Reach me at with any and all questions. I am here to help each and every one of you reach your goals!

In health and honor,
William Smith (aka) Thunder of the American Gladiators

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