I’ve been using Hammer Nutrition’s Perpetuem for about 3 year now during my ultra-endurance mountain bike racing, riding and training. If I’m going to be on the bike for 3+ hours, I start to work Perpetuem into my fueling. I stick with the Orange-Vanilla with a mix it 3:1 with Heed. That is what has been working out well for me and helping me to some great results in the ultra-endurance mountain bike racing…5 first, 1 second and 2 forth place finishes as a result of Hammer Nutrition’s Perpetuem. For me, this is the only fuel for ultra-endurance. It’s #howihammer.