Tip for novice runners: You don't need a gel/Gatorade for your 5k or 10k race. It's doing nothing except maybe giving you GI issues. Energy intake isn't a limiter until we get close to 2hr+ of racing. For ~60-90min, it can sometimes help via modulating perception of effort, but it's not needed. It's why elite runners often run crazy fast half marathons without taking gels/carb drinks/water. Not so in the marathon.