N8 Re:Fuel Energy Gel is a high performance energy gel that is easy to consume, taste delicious and works almost immediately! As an athlete, carbohydrates are the ultimate fuel source that provides the body with energy to perform bodily functions. As we train, blood sugar levels drop as the body steadily consumes carbohydrates for fuel. Thus it is important that the body is fed with the right amount of carbohydrates at proper intervals to ensure the body is able to continue training optimally.