As a heavier elite road cyclist (190lbs) I'm always looking for something to keep me fueled so I don't get dropped on climbs with the little guys and can crush them in the sprint to the line. I've tried quite a few products, including HammerHeed, CytoMax, etc, and after finishing my first container of Carbo Rocket, I must say it's the best I've tried so far. No cramping, no bonking. I knew it was working well when I peeled off my jersey and it could stand up on it's own from all the salt in my sweat. So, it works great, cheaper than Cytomax, and it's made in the USA...got to love it.