This past cyclocross season, I received a sample packet of Hammer Nutrition’s Perpetuem. Perpetuem is a drink mix intended for endurance rides. I finally decided to use this sample during yesterday’s four hour ride.
I ran out of Perpetuem before the end of my ride, and started slowing down before I got home. Of course, I don’t usually do thirty mile mountain bike rides, but I felt it was a great opportunity to put this sports beverage to the test.
It passed.
I fully intend to place an order for Perpetuem this weekend. When taken frequently, I felt great and was able to keep going. It seemed to give my body what it needed to keep the greatly feared bonk at bay. The key is to consistently use it throughout the whole time you wish not to bonk. If you wish to bonk, then quit using it. The bonk will soon follow. 
Many people are familiar with the flavor of Heed. It isn’t exactly a fine wine that brings great pleasure the minute it meets the palate. Perpetuem doesn’t exactly fit this description as well, however it is different. It has the trademark subtlety of Hammer products, with more of a grainy flavor, a flavor that I found highly desirable in the midst of my workout. It seemed to be just what my body wanted.
I am still trying to decide which sports drink I prefer for the average ride, but Perpetuem has my vote for endurance. 