There is much to be said for exercise, but I still experience significant brain-drain and sluggish performance despite working out 7 days a week(weights 4 days, running 3). Perhaps the combination of physical activity, diet and additional supplements are in order for some individuals. As far as I am concerned, 'to each their own' means more than allowing individuals to decide whats ok for them - sometimes it can mean that 'each's own' is different and what works for some may not be for others.