I have been drinking FND for over a month now, every morning. I am a keen runner and I have noticed that very soon after I started drinking FND, my fitness increased - I was running faster but with less effort than before, and my VO2 Max fitness score has increased. I also deal with generalised anxiety and have noticed that since drinking FND, my general mood is better and I feel more positive. I have also found I can focus better at work and in general. I would recommend this drink to anyone!