I tried CarboRocket for a big ride in St. George, Utah earlier this week. I had never used it before. Against my better judgement (not good to try a new nutritional product on a long ride), I let Dug put it in my water. It fueled me for four solid hours in 100 degree weather! I had all the gas I needed and then some. I had all the energy I needed too. Usually products that provide that kind of boost are hard to get down. CarboRocket goes down smooth and keeps me up!