But, never underestimate these quirky healthy eating snacks. This genius yellow fruit is extremely clever－maybe that’s why it gets called ‘brain food’. Bananas originate in the rainforest, and if they grow towards the small rays of light that pass through the thick foliage, the plant would grow crooked and risk to topple over. So, bananas do not grow directly towards the sun rays but grow upwards to break through the canopy. How’s that for evolution!