When I first saw my friend using this, I was like, "whoa, what is Endure?!" Endur-EH, like a Spanish pronunciation. Now I can't say "endure," but I digress...
As I did with the Physivantage Collagen and Protein products, I only needed to use it once to see/feel the benefits, and now I'm a believer. Taking this as suggested (16oz to start, and 16oz mid-day) on a full day of climbing really makes a noticeable difference. I'm really stoked to have this for places like the Black Canyon or a long day in the desert, where the endurance really comes into play. It's hard to describe, but it just makes my body feel really good, and I feel like I'm able to perform at my max. I was starting to feel a little tired in the middle of a long route, and chugged the other 16oz I brought up on the wall with me. Go-go juice, engage!! I felt a good burst of energy to finish out the route and long day. How can beets be so magical? ...Beets me!