Science In Sport Promo Codes and Coupons September 2025

Go Isotonic Energy Gels - Variety Packs

About SiS GO Isotonic GelsThe world’s first isotonic gel, effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise. SiS GO Gels are designed to be consumed without water meaning that you can ensure rapid delivery of carbohydrate to your muscles without the feeling of being bloated. Recommended UsageConsume 1-3 gels per hour to deliver approximately 60 grams of carbohydrate and maximize carbohydrate utilization rates. Packs can include the following flavours depending on size (available with 7, 15, 20 & 35 Gels): SiS GO Isotonic Energy Gel Single Apple SiS GO Isotonic Energy Gel Single Lemon & Lime SiS GO Isotonic Energy Gel Single Orange SiS GO Isotonic Energy Gel Single Blackcurrant SiS GO Isotonic Energy Gel Single Tropical SiS GO Isotonic Energy Gel Single Pineapple SiS GO Isotonic Energy Gel Single Pink Grapefruit

HYDRO+

Scientifically formulated electrolyte drink mix offering a refreshing twist on hydration. Contributing to your body’s electrolytes to support performance during exercise or daily activities.  A unique formulation features five key electrolytes and three essential vitamins blended to create a scientifically supportive dose for optimal hydration.  Delivered in convenient single use sachets, ideal for on-the-go. Simply add this tasty flavouring to your water.  WHY USE? A unique formulation containing 5 essential electrolytes: Calcium, Magnesium, Chloride, Sodium, and Potassium  Supports hydration and is a good way to replace lost salts  Vitamin C¹ to support normal energy-yielding metabolism Vitamin B6 & B12² to help reduce tiredness and fatigue Formulated for daily use. Easy to enjoy, anytime, anywhere.  Convenient single-serve sachets for on-the-go hydration   1. Vitamin C contributes to normal energy-yielding metabolism.  2. Vitamin B6 & B12 contribute to the reduction of tiredness and fatigue.    IDEAL FOR The convenient single use sachets fit easily in your bag or pocket, the perfect electrolyte drink for those with an active lifestyle always on the go.  From trail running to bike-packing to a round of golf or even a game of tennis the HYDRO+ Electrolyte Drink Mix is a versatile and handy way for everyone to hydrate, whatever the day throws at them.     THE SCIENCE  The British Dietetic Association states that water makes up, on average, 55% of an adult’s body weight6 and plays many different roles in the body including removing waste products in urine, acting as a lubricant.  The amount of fluid we need depends on many things including the weather, how much physical activity we do and our age. It’s recommended we drink around 6-8 glasses of fluid per day, roughly 2,000ml for men and 1,600ml for women6. If the weather is hot or we are exercising, we need to drink more7.     DRINK BEFORE EXERCISE  In a 2011 paper, it suggests that before exercise, athletes often fail to hydrate effectively8 and begin exercise in a hypohydrated state (i.e. dehydrated), which refers to the state of being in a negative water balance. As little as a 2-3% body mass deficit is enough to adversely affect physical and mental performance during exercise, especially when the exercise is undertaken in hot conditions. Research from 2019, suggests that athletes may achieve a hydrated state prior to exercise by consuming a fluid volume equivalent to 5–10 ml per kilo of body mass in the 2 to 4 hours before exercise9. A person weighing 70kg, for example, should drink between 350-700ml.     STAY HYDRATED  When you sweat you lose fluids and key electrolytes, such as Sodium, Potassium, Magnesium, Chloride and Calcium. It’s therefore important to replace both fluids and electrolytes if you want to avoid the effects of dehydration. It has been said that on average, sweat rates are estimated to be between 0.3–2.4L/hour during exercise9.  A 2016 paper highlighted that when dehydrated, your total blood volume decreases, thereby causing a reduced blood flow to your skin and muscles. Collectively, these responses result in higher body temperatures, reduced sweat rates, increased muscle glycogen use, increased perception of effort and higher heart rates.9  Given the negative effects of dehydration, it is therefore crucial that you begin your training session already in a hydrated state.     REHYDRATE WITH ELECTROLYTES  Sodium is one of the electrolytes that is lost in our sweat during exercise. HYDRO+ provides 1576mg of electrolytes (Potassium, Chloride, Calcium, Magnesium and Sodium) per 4.1g serving to support effective rehydration.   A LOOK INSIDE THE STICK  120mg Calcium to maintain normal bones10  56mg Magnesium contributes to normal muscle function11 and electrolyte balance  350mg Sodium and 750mg Chloride per 4.1g daily serving  300mg Potassium to support normal muscle function12   Daily Electrolyte Requirements  The daily requirements for these minerals vary on gender, age, and in some cases, fitness activity level/duration. The National Health Service (NHS) has set standards for each of these13.  For both males and females, it is recommended to keep Sodium intake to below 2,400mg.   Potassium recommendation for males and females are 3,500mg per day. Potassium is rich in many foods and will not need additional supplementing.   Magnesium intake for males should be 300mg per day, and females should intake 270mg per day.   Calcium is essential and is found in many food items. The suggested intake is 700mg per day for both males and females.    The Optimal Number of Electrolytes for Exercise  HYDRO+ has been scientifically formulated to meet the optimal dosage of electrolytes to support your sporting performance.   Fluid intake during exercise should be set to prevent a fluid loss higher than 2% body weight. The amount of sodium required to be consumed during exercise depends on a range of factors including the type of sport practiced, the duration and intensity of the session, and the individual sweat rate and sweat sodium concentration14.  The consumption of more concentrated sodium drinks during exercise is not likely required for most sports, except for certain ultra-endurance events where sodium losses reach substantially higher values14.     ESSENTIAL VITAMINS  Each sachet is packed with three essential vitamins to help you reach your daily nutrients with every sip. HYDRO+ has 80mg of added Vitamin C to support energy-yielding3 and the functioning of your immune system4. It also contains 0.42mg of Vitamin B6 & 0.75μg per serving of Vitamin B12 which helps the reduction of fatigue5.  1 Vitamin C contributes to normal energy-yielding metabolism.  2 Vitamin C contributes to the normal function of the immune system.   3 Vitamin B6 and B12 contributes to the reduction of tiredness and fatigue.    TRUSTED BY ELITES  All Science in Sport products are Informed Sport Registered. Each product being developed using a world-class approach to banned substance testing, providing assurance for all athletes.    1. Choi, D.H., Cho, J.Y., Koo, J.H. and Kim, T.K., 2021. Effects of electrolyte supplements on body water homeostasis and exercise performance during exhaustive exercise. Applied Sciences, 11(19), p.9093.  2. Shirreffs, S.M. and Maughan, R.J., 1998. Volume repletion after exercise-induced volume depletion in humans: replacement of water and sodium losses. American Journal of Physiology-Renal Physiology, 274(5), pp.F868-F875.  3. Traber, M.G. and Stevens, J.F., 2011. Vitamins C and E: beneficial effects from a mechanistic perspective. Free Radical Biology and Medicine, 51(5), pp.1000-1013.  4. Carr, A.C. and Maggini, S., 2017. Vitamin C and immune function. Nutrients, 9(11), p.1211.  5. Tardy, A.L., Pouteau, E., Marquez, D., Yilmaz, C. and Scholey, A., 2020. Vitamins and minerals for energy, fatigue and cognition: A narrative review of the biochemical and clinical evidence. Nutrients, 12(1), p.228.  6. British Dietetics Association, 2023. Fluid (water and drinks) and hydration. Available at: Fluid (water and drinks) and hydration - British Dietetic Association (BDA) (Accessed on 24.06.2024).  7. Wendt, D., Van Loon, L.J. and Marken Lichtenbelt, W.D., 2007. Thermoregulation during exercise in the heat: strategies for maintaining health and performance. Sports Medicine, 37, pp.669-682.  8. Shirreffs, S. M., & Sawka, M. N. (2011). Fluid and electrolyte need for training, competition, and recovery. Journal of Sports Sciences, 29(1), 39-46.  9. Thomas, D. T., Erdman, K. A., & Burke, L. M. (2016). American College of Sports Medicine Joint Position Statement. Nutrition and Athletic Performance. Medicine and Science in Sports and Exercise, 48(3), 543.    10. Wosje, K.S. and Specker, B.L., 2000. Role of calcium in bone health during childhood. Nutrition Reviews, 58(9), pp.253-268.  11. Bohl, C.H. and Volpe, S.L., 2002. Magnesium and exercise. Critical Reviews in Food Science and Nutrition, 42(6), pp.533-563.  12. Lindinger, M.I., 1995. Potassium regulation during exercise and recovery in humans: implications for skeletal and cardiac muscle. Journal of Molecular and Cellular Cardiology, 27(4), pp.1011-1022.  13. National Health Service. 2020. Vitamins and Minerals. Available at: Vitamins and minerals - Calcium - NHS (www.nhs.uk) (Accessed on 20.08.2024).   14. McCubbin, A.J., 2023. Modelling sodium requirements of athletes across a variety of exercise scenarios–Identifying when to test and target or season to taste. European Journal of Sport Science, 23(6), pp.992-1000.

GO Caffeine Shot Cola - 12 pack

GO Energy + Caffeine Gels

Beta Fuel Gels

WORLD-LEADING ENERGY GEL OPTIMISED WITH A NEW CARBOHYDRATE RATIO Part of an entire world-leading fuelling solution range that includes drinks and chews, our Beta Fuel Dual Source Energy Gel is optimised with a brand new 1:0.8 ratio of 40g carbohydrate to enhance your power output, increase your body's carbohydrate usage efficiency, and limit gastrointestinal discomfort to deliver a scientifically superior fuel. WHY YOU SHOULD USE BETA FUEL DUAL SOURCE ENERGY GEL As an endurance athlete (your events typically last more than two hours) you need to take in between 80-120g of carbohydrate per hour. The Science in Sport Beta Fuel Dual Source Energy Gel delivers an optimised 40g of carbohydrate in a single, convenient fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance. NEW 1:0.8 RATIO REPLACES 2:1 RATIO A 1:0.8 ratio of maltodextrin to fructose increases the percentage of ingested carbohydrate that is oxidized (known as efficiency) from 62% to 74% when compared with a ratio of 2:1 A 1:0.8 ratio of maltodextrin to fructose reduces self-reported symptoms of stomach fullness when compared with a ratio of 2:1 THE SCIENCE BEHIND BETA FUEL HAS EVOLVED Through our Performance Solutions team, we have worked closely with elite athletes in the research and development of the new Beta Fuel range to bring you a scientifically superior fuel in a range of formats that allow you to use +17% more carbohydrate (O’Brien et al, 2013). A ratio of 1:0.8 enhances exogenous CHO oxidation compared with 2:1 ratio by 17% (O’Brien et al) and 10% (O’Brien et al) A ratio of 1:0.8 enhances mean power output during 10 maximal sprint efforts by 3% compared with 2:1 ratio (O’Brien et al) A ratio of 1:0.8 increases % of ingested CHO that was oxidised (efficiency) from 62% (2:1) to 74% (1:0.8) (O’Brien et al) A ratio of 1:0.8 reduces symptoms of stomach fullness and nausea when compared with a ratio of 2:1 (O’Brien et al)

Beta Fuel Gels

WORLD-LEADING ENERGY GEL OPTIMISED WITH A NEW CARBOHYDRATE RATIO Part of an entire world-leading fuelling solution range that includes drinks and chews, our Beta Fuel Dual Source Energy Gel is optimised with a brand new 1:0.8 ratio of 40g carbohydrate to enhance your power output, increase your body's carbohydrate usage efficiency, and limit gastrointestinal discomfort to deliver a scientifically superior fuel. WHY YOU SHOULD USE BETA FUEL DUAL SOURCE ENERGY GEL As an endurance athlete (your events typically last more than two hours) you need to take in between 80-120g of carbohydrate per hour. The Science in Sport Beta Fuel Dual Source Energy Gel delivers an optimised 40g of carbohydrate in a single, convenient fuelling solution with minimal risk of GI discomfort that enables you to maintain optimal performance. NEW 1:0.8 RATIO REPLACES 2:1 RATIO A 1:0.8 ratio of maltodextrin to fructose increases the percentage of ingested carbohydrate that is oxidized (known as efficiency) from 62% to 74% when compared with a ratio of 2:1 A 1:0.8 ratio of maltodextrin to fructose reduces self-reported symptoms of stomach fullness when compared with a ratio of 2:1 THE SCIENCE BEHIND BETA FUEL HAS EVOLVED Through our Performance Solutions team, we have worked closely with elite athletes in the research and development of the new Beta Fuel range to bring you a scientifically superior fuel in a range of formats that allow you to use +17% more carbohydrate (O’Brien et al, 2013). A ratio of 1:0.8 enhances exogenous CHO oxidation compared with 2:1 ratio by 17% (O’Brien et al) and 10% (O’Brien et al) A ratio of 1:0.8 enhances mean power output during 10 maximal sprint efforts by 3% compared with 2:1 ratio (O’Brien et al) A ratio of 1:0.8 increases % of ingested CHO that was oxidised (efficiency) from 62% (2:1) to 74% (1:0.8) (O’Brien et al) A ratio of 1:0.8 reduces symptoms of stomach fullness and nausea when compared with a ratio of 2:1 (O’Brien et al)

Geles Beta Fuel + Nootrópicos

GEL ENERGÉTICO CON BASE CIENTÍFICA PARA UN MÁXIMO RENDIMIENTO FÍSICO Y MENTAL Diseñado como una fuente energética ideal para todo el cuerpo y líder en el mundo, nuestro innovador gel energético Beta Fuel Dual Source con nootrópicos combina una nueva proporción de hidratos de carbono con Cognizin® Citicoline para mejorar tanto el rendimiento físico como mental del deportista. Parte de una gama completa de soluciones de repostaje que incluye bebidas y barritas, nuestro gel energético Beta Fuel Dual Source con nootrópicos está optimizado con una nueva proporción 1:0,8 de hidratos de carbono de 40 g para mejorar la fuerza mental y física del deportista, aumentar la eficiencia de uso de los hidratos de carbono y minimizar el malestar gastrointestinal. El objetivo es proporcionar una solución de repostaje científicamente superior. ¿QUÉ SON LOS NOOTRÓPICOS? Los nootrópicos son suplementos capaces de mejorar o de mantener un rendimiento cognitivo máximo, como la atención, la concentración, la creatividad, la motivación, la memoria, etc. Hemos combinado nuestro innovador gel energético Beta Fuel con nootrópicos para ofrecer a los atletas de resistencia una fuente de energía completa, tanto para el cuerpo como para la mente. Sin duda, cuando las exigencias físicas son tan elevadas, es necesario que la mente también esté al máximo. POR QUÉ SE RECOMIENDA UTILIZAR EL GEL ENERGÉTICO BETA FUEL DUAL SOURCE CON NOOTRÓPICOS Los atletas de resistencia (cuyos campeonatos suelen durar más de dos horas) necesitan tomar entre 80 y 120 g de hidratos de carbono por hora. El gel energético de Beta Fuel Dual Source con nootrópicos proporciona 40 g de hidratos de carbono optimizados en una única y cómoda solución isotónica de repostaje con un riesgo mínimo de causar problemas gastrointestinales. Aunque los hidratos de carbono se encargan de mantener un rendimiento físico óptimo, los nootrópicos son los encargados de mantener un nivel máximo de rendimiento mental. LA NUEVA PROPORCIÓN 1:0,8 SUSTITUYE LA ANTERIOR DE 2:1 La proporción de 1:0,8 de maltodextrina a fructosa aumenta el porcentaje de hidratos de carbono ingeridos que se oxidan (lo que se conoce como eficiencia) del 62 % al 74 % en comparación con la proporción de 2:1 Asimismo, la proporción de 1:0,8 de maltodextrina a fructosa reduce los síntomas de hinchazón estomacal que decían tener los deportistas con la proporción de 2:1 ADICIÓN DE MEJORAS COGNITIVAS 250 mg de citicolina Cognizin® para mejorar la función cognitiva 200 mg de cafeína, 1 g de taurina y 200 mg de teanina LA CIENCIA QUE ESTÁ DETRÁS DE BETA FUEL HA EVOLUCIONADO A través de nuestro equipo de Performance Solutions, durante la investigación y el desarrollo de la nueva gama de Beta Fuel hemos trabajado en estrecha colaboración con atletas de élite para ofrecer un combustible científicamente superior en una gama de formatos que permitan a los deportistas utilizar un 17 % adicional de hidratos de carbono (O'Brien et al, 2013). La proporción de 1:0,8 mejora la oxidación exógena de CHO en comparación con una proporción de 2:1 en un 17 % (O'Brien et al) y en un 10 % (O'Brien et al) La proporción de 1:0,8 mejora en un 3 % el rendimiento energético óptimo durante 10 esfuerzos de esprint máximos en comparación con la relación 2:1 (O'Brien et al.) La proporción de 1:0,8 aumenta el porcentaje de CHO ingerido que se oxida (eficiencia) del 62 % (2:1) al 74 % (1:0,8) (O'Brien et al) La proporción de 1:0,8 reduce los síntomas de hinchazón estomacal y náuseas en comparación con la proporción de 2:1 (O'Brien et al)

Beta Fuel + Nootropics Gels

EVIDENCE-BASED ENERGY GEL FOR PHYSICAL AND MENTAL POWER OUTPUT Designed as a world-leading, whole body energy source, our innovative Beta Fuel Dual Source Energy Gel + Nootropics combines a new ratio of carbohydrate with Cognizin® Citicoline to improve both your physical and mental performance. Part of an entire fuelling solution range that includes drinks and chew bars, our Beta Fuel Dual Source Energy Gel + Nootropics is optimised with a brand new 1:0.8 ratio of 40g carbohydrate to enhance your mental and physical power output, increase your body's carbohydrate usage efficiency, and limit gastrointestinal discomfort to deliver a scientifically superior fuel. WHAT ARE NOOTROPICS? Nootropics are supplements that can improve or maintain peak cognitive performance such as attention, focus, creativity, motivation, memory and so on. We've combined our innovative Beta Fuel Energy Gel with nootropics to offer endurance athletes a complete energy source for both body and mind because you need peak mental function when the demands are most physical. WHY YOU SHOULD USE BETA FUEL DUAL SOURCE ENERGY GEL + NOOTROPICS As an endurance athlete (your events typically last more than two hours) you need to take in between 80-120g of carbohydrate per hour. The Science in Sport Beta Fuel Dual Source Energy Gel + Nootropics delivers an optimised 40g of carbohydrate in a single, convenient isotonic fuelling solution with minimal GI discomfort. While the carbohydrates will maintain optimum physical power output, the nootropics will ensure you maintain mental performance. NEW 1:0.8 RATIO REPLACES 2:1 RATIO A 1:0.8 ratio of maltodextrin to fructose increases the percentage of ingested carbohydrate that is oxidized (known as efficiency) from 62% to 74% when compared with a ratio of 2:1 A 1:0.8 ratio of maltodextrin to fructose reduces self-reported symptoms of stomach fullness when compared with a ratio of 2:1 ADDITION OF COGNITIVE ENHANCERS 250mg Cognizin® Citicoline for improved cognitive function 200mg caffeine, 1g Taurine and 200mg Theanine