I have been using e-Gels and e-Fuel since 2005. I like the consistency and flavor of the gels. My stomach appreciates the low sugar content compared to other brands. I have completed 11 marathons, 5 Half Ironmans, and 2 Ironmans using these products. And I may be 50, but I don’t plan to stop anytime soon. I now have several training partners using Crank Sports products.