Muir Energy Gels and Nutrition are fairly new to the running world and endurance nutrition world. They are unique in that they use exclusively real food and mineral-rich ingredients. This also means Muir Energy Gels are easy to metabolize and easy on the stomach, so hopefully there are minimal to no GI issues.
As it gets hotter and more humid, the next few product reviews are geared towards hydration and fueling. Many people are familiar with an energy gel. There are plenty of brands out there, but GU was the first. Innovation is all we know. GU created the first energy gel over 20 years ago. It also has the widest variety.
In short, energy gels replenish your depleted carbohydrate stores when running—any endurance athlete from runners to swimmers or cycling benefits from taking fueling during training and racing.