Banana - a real store of energy. No product can charge the body of energy so long (45-60 min), like banana. Besides, its calories are mostly sucrose, lactose, and glucoze. The are 735 types of bananas, but only 2 sorts are grown.
Banana contains cellulose, scratch, potassium, mangesium, zinc, serum, chlorine, calcium, pectin, vitamin A, C, E, vitamins B group, sucrose, glucose. Thanks to big number of sugar, it will give the nessesary energy we need.
A secret: try to eat first ripe banana and the not ripe banana, the ripe one will give you the nessesary energy and the not ripe one will digest for a time and keep you not hungry until lunch.