Fuelled by Science, Trusted By Elites, Proven By Performance Featured Articles Running Marathon Training in Winter Marathon training in the cold affects your body differently. We guide you through how to work with the conditions instead ... 10 MinJonah Rosner Fuelling Guides Fueling for Half and Full Marathons Knowing how to fuel properly for different endurance runs can be confusing. Jonah explains best strategies for optimal fueling. 5Jonah Rosner The Science Inside the Science of Gut Training Runner’s stomach is a common problem for marathoners. Learn how to train your gut as well as your legs to ... 6Jonah Rosner The Science Redefining Marathon Fuelling Guidelines What drives a marathon performance, and what discoveries have been made that could transform the training of elite athletes? Professor ... 9Professor James Morton The Science The Science Behind Our GO Nitrates Shot Find out how using the SiS GO Nitrates shot can make your workout easier and improve oxygen cost during moderate- ... 5Professor James Morton Sport SiS GO Sports Drink: Power Your Performance Stay energised and perform at your peak with our scientifically formulated energy drink. Especially designed for high-intensity exercise. 7Dr Marc Fell Cycling Fuel for the Ride Simple Nutrition Tips for Red Ride and Blue Ride Cyclists at Chris Hoy's Tour de 4 Event 6Science in Sport Team Fuelling Guides Mastering In-Race Fuelling for Marathon Success In this article, we explain the science behind effective in-race fuelling, share expert recommendations, and provide practical tips to keep ... 10 MinJonah Rosner Sport Hydrate smarter, perform better Ever hit a wall on a long run? We've created your 3-Step Plan to Peak Performance. 10 MinJonah Rosner Articles by sport Cycling Running Triathlon Football Basketball Rugby Swimming Other Sports Latest Articles Running Marathon Training in Winter Marathon training in the cold affects your body differently. We guide you through how to work with the conditions instead ... 10 MinJonah Rosner Fuelling Guides Fueling for Half and Full Marathons Knowing how to fuel properly for different endurance runs can be confusing. Jonah explains best strategies for optimal fueling. 5Jonah Rosner The Science Inside the Science of Gut Training Runner’s stomach is a common problem for marathoners. Learn how to train your gut as well as your legs to ... 6Jonah Rosner The Science Redefining Marathon Fuelling Guidelines What drives a marathon performance, and what discoveries have been made that could transform the training of elite athletes? Professor ... 9Professor James Morton The Science The Science Behind Our GO Nitrates Shot Find out how using the SiS GO Nitrates shot can make your workout easier and improve oxygen cost during moderate- ... 5Professor James Morton Sport SiS GO Sports Drink: Power Your Performance Stay energised and perform at your peak with our scientifically formulated energy drink. Especially designed for high-intensity exercise. 7Dr Marc Fell Cycling Fuel for the Ride Simple Nutrition Tips for Red Ride and Blue Ride Cyclists at Chris Hoy's Tour de 4 Event 6Science in Sport Team Fuelling Guides Mastering In-Race Fuelling for Marathon Success In this article, we explain the science behind effective in-race fuelling, share expert recommendations, and provide practical tips to keep ... 10 MinJonah Rosner 0Load More The Experts Alec Fenn Health and Fitness Journalist and Copywriter Dr Emily Jevons Registered Nutritionist Professor James Morton Director of Performance Solutions Science in Sport Team The Experts Science in Sport Contributor An Expert Renee McGregor Clinical Director & Sports Dietician Jonah Rosner Applied sport scientist, strength and running coach Dr Marc Fell Senior Performance Nutritionist Lauren Charlton, MS RDN Registered Sports Dietitian