What is the possible reason that some foods promote the brain performance?

Why certain food choices might help the brain function better remains unclear. Perhaps these regimens’ known cardiovascular benefits, which promote a good flow of blood and oxygen to the brain, are key. But other factors may be at work. Of course, questions about when these dietary changes need to happen or how diet stacks up against other factors, such as physical activity, sleep patterns and genetics also remain unanswered.

You can look at online sales as divided roughly into two groups; small-ticket and big ticket items. Big-ticket items include computer equipment and consumer electronics, where orders can easily be more than 1,000. Small-ticket items include apparel, books, software, videos, and toys, where the average purchase is typically less than ￠100. In the early days of e-commerce, sales of small-ticket items vastly outnumbered those of large-ticket items. But the recent growth of big-ticket items has changed the overall sales mix.