FUEL Science





Your body’s preferred form of fuel is glucose.  It would rather use this carbohydrate than any other type of substrate.  Due to this, carbohydrate ingestion should be a huge part of supplementation before, during, and after training. Unfortunately, carbs have a bad reputation.  Think about things this way:  If you continue to put gas in your gas tank after it is full, would you blame the gas for the mess you just made?  The issue is not carbohydrates; the issue is the timing of ingestion, the type of carbohydrate, and exercise intensity and duration.  If you are serious about your training, then fueling performance should be a major goal. The carbohydrates you eat for fuel all end up being converted to glucose. The main difference between different carb types being converted to glucose comes down to timing, which is a variable that is influenced by the type of carbohydrate, molecular weight, molecular structure, gastric emptying, and the amount of carbohydrate that is consumed. Consuming only one type of carbohydrate places limits on how much of that can be converted to usable fuel.

In order to prevent timing gaps in the conversion of carbs to glucose, we at Classified Nutrition developed FUEL. With equal portions of 3 specific carbohydrates (Highly Branched Cyclic Dextrin, Carb10™, and Waxy Maize), and each having their own unique speed of absorption of conversion to glucose, you will have a steady stream of fuel to working muscle so you can press further.  Ingesting FUEL before and during training is like adding an extra gas tank and some NOS, but not adding any more weight to the vehicle. Ingesting FUEL after your training will speed up the reloading of glycogen stores, enhance recovery, and promote a physiological state of repair and tissue adaptation.  It will change the way you train, adapt to training, and recover from training. Based on these objectives, our goal was then to compile a formula that would satisfy these objectives and therefore give anyone the upper-hand going into training or competition.  Our ingredient list is short, which is just the way we think things should be.  Why use 20 active ingredients, when 3 will do?  When dosed correctly, these 3 ingredients will work synergistically in the body to effectively take your training to new heights.  Whether you are looking to run or cycle further and faster, change your body composition, pack on some mass, sprint faster, jump higher, or just get stronger, BEFORE can take you to the next level.  But how can a product so simple do all of this?

Here’s the ingredient breakdown:

Highly Branched Cyclic Dextrin

Highly Branched Cyclic Dextrin (HBCD) is gaining a large following in the supplement world lately, and for good reason.  This relatively new carbohydrate has some amazing qualities.  It has a very high molecular weight, but a very narrow molecular weight distribution, which results in a very low osmotic pressure.  In real world terms, HBCD spends very little time in the stomach.  After ingestion, it moves quickly to the small intestine where it is rapidly broken down into glucose, which can then travel to working tissue and be used immediately as fuel.  Due to its unique molecular shape, it has the potential to bind to other molecules, like amino acids, and speed up their rate of gastric emptying, as well.  Research now shows that HBCD reduces perceived exertion, may reduce the stress response during extended exercise.  If your goal is to provide the body with as much usable fuel as possible to maximize training and performance, then HBCD must be a part of pre-, intra-, and post-training nutrition.

Carb 10™

Carb10™, a natural, gluten-free pea starch, works as our intermediary fuel source, but it is not your typical carbohydrate.  It is extremely unique in its digestive and functional characteristics. It provides similar caloric (fuel) loads when compared to common carbohydrate supplements like maltodextrin; however, it does not elevate blood sugar or insulin levels, and has a much faster rate of gastric emptying when compared to traditionally supplemented carbohydrates. Carb10™ provides the energy you need while maintaining both insulin and glucose control without stressing the digestive system, so you can maintain your training and competitive intensity. 

Waxy Maize

Waxy Maize Starch is a corn-based carbohydrate.  It was carefully selected to round out this carbohydrate trio due to the “slowly digested” nature and structural characteristics that prevent spikes in insulin.  Unique to Waxy Maize, when compared to other carbohydrate fuel sources, is the increase in fat breakdown and utilization during prolonged exercise.  This serves as a huge advantage over other types of carb fuel in that it increases the total amount of usable fuel during exercise or competition and reduces the metabolic strain that occurs when the body shifts from predominantly carbohydrates to predominantly fats during extended high intensity exercise.  In the long run, it will see you through the finish, and then some.

With FUEL, you get 3 distinctly unique carbohydrate fuel sources that are used at differing rates to allow for a greater amount of carbohydrate to be absorbed and utilized.  HBCD for right now, Carb10™ for once you are in the zone, and Waxy Maize to see you to the end.  They all work toward the same purpose:  To provide more usable FUEL to your body so you can train harder and longer, adapt more rapidly, and repair and restore to a greater extent so you can do it all again tomorrow.

FUEL Sources:

Supplementation of Carbohydrates During Exercise Sources

Pannoni, N.  (2011).  “The Effect of Various Carbohydrate Supplements on Postprandial Blood Glucose Response in Female Soccer Players". Graduate School Theses and Dissertations.


Neufer PD, Costill DL, Fink WJ, Kirwan JP, Fielding RA, Flynn MG. Effects of exercise and carbohydrate composition on gastric emptying. Med Sci Sports Exerc. 1986;18(6):658-62.


Wallis GA, Rowlands DS, Shaw C, Jentjens RL, Jeukendrup AE. Oxidation of combined ingestion of maltodextrins and fructose during exercise. Med Sci Sports Exerc. 2005;37(3):426-32.


Jozsi AC, Trappe TA, Starling RD, et al. The influence of starch structure on glycogen resynthesis and subsequent cycling performance. Int J Sports Med. 1996;17(5):373-8.


Jeukendrup, A.E.  (2014).  A step towards personalized sports nutrition:  Carbohydrate intake during exercise.  Sports Medicine.  44(Supp 1):25-33.  


Jeukendrup, A.E.  (2004).  Carbohydrate intake and exercise performance.  Nutrition.  20:669-677.


Highly-Branched Cyclic Dextrin Sources

Suzuki K, Shiraishi K, Yoshitani K, Sugama K, Kometani T. Effect of a sports drink based on highly-branched cyclic dextrin on cytokine responses to exhaustive endurance exercise. J Sports Med Phys Fitness. 2014;54(5):622-30.


Furuyashiki T, Tanimoto H, Yokoyama Y, Kitaura Y, Kuriki T, Shimomura Y. Effects of ingesting highly branched cyclic dextrin during endurance exercise on rating of perceived exertion and blood components associated with energy metabolism. Biosci Biotechnol Biochem. 2014;78(12):2117-9.


Choi SS, Danielewska-nikiel B, Ohdan K, Kojima I, Takata H, Kuriki T. Safety evaluation of highly-branched cyclic dextrin and a 1,4-alpha-glucan branching enzyme from Bacillus stearothermophilus. Regul Toxicol Pharmacol. 2009;55(3):281-90.


Takii H, Takii nagao Y, Kometani T, et al. Fluids containing a highly branched cyclic dextrin influence the gastric emptying rate. Int J Sports Med. 2005;26(4):314-9.


Takii H, Ishihara K, Kometani T, Okada S, Fushiki T. Enhancement of swimming endurance in mice by highly branched cyclic dextrin. Biosci Biotechnol Biochem. 1999;63(12):2045-52.


Carb10 TM Sources

Ziegenfuss, T.M., et. al.  The effects of Carb10TM on serum osmolality, concentrations of glucose and insulin, and gastric emptying time:  A pilot study.  The Center for Applied Health Sciences, 4302 Allen Road, Ste 120, Stow, OH 44224.


Waxy Maize Sources

Roberts, M.D., et. al.  (2011).  Ingestion of a high-molecular-weight hydrothermally modified waxy maize starch alters metabolic responses to prolonged exercise in trained cyclists.  Nutrition.  27(6):  659-665.