Jon V. reviewed Qualia Focus
If you are looking for a totally natural way to enhance your focus and concentration, I highly recommend Focus from NeuroHacker. I has totally helped my performance at work.
Flow in a bottle
Fall into flow, default back to flow, nutrients for a mindful state, a playground construction set for performance.
coffee substitute
so far with this ive been able to take coffee and cacao nib tea out of my diet while still maintaining a high level of focus in my work. enjoying it so far
Best preworkout ever
I use this before every freestyle calisthenics workout. This is better than preworkout.