I've never taken a weight training/workout supplement in my life but decided to go a little crazy and try a "pre-train" supplement. I chose Nitraflex by German American Technologies (GAT) and took a dose before tonight's workout. Whoa nellie!!!! This stuff is insane. I took it 3 1/2 hours ago and I STILL feel uncomfortably energetic. Yes...that was a powerthirst reference. If any of you were wondering whether or not "pre train" supplements worked, the answer is definitely yes. I feel like I'm coming at OSA like a spider monkey!