I tired Orbana last weekend. Whilst the ride was short - only 1 hr 20 min, we covered 16K with a mix of steep climbs, sweeping descents, and twisting single-track. I would say that the energy levels during the exercise did not wane at all, and I managed to maintain a hard pace with consistent cadence throughout. Recovery was quicker than at other times with other supplements, and I did not feel as thirsty. Overall I would say Orbana's a good product with noticeable benefits and gains over other products on the market. I can recommend it. Oh, and it tastes nice too and is extremely light on the stomach. Another plus is the convenient pre-measured bottles - good for taking out on a day ride without the weight of water.