To be completely honest, I'm not a huge pre-workout fan. I generally dislike the "niacin flush" itchiness that is usually a standard occurrence with most pre-workout. That being said, I really like this formula. I don't notice a huge rush of energy, followed by a crash, but rather a strong, steady amount. I used this pre-workout this morning, worked out, then went paddle boarding this afternoon. I felt (and still feel) like I have a ton of energy, and I have far less muscle fatigue than I would expect for the amount of activity. The flavor is pretty good, definitely not my favorite, but I would buy it again for how good it is.