I'm flying back to Australia and sitting for more than 20 hours while eating all this food. Outside in the wild I can easily go without food for 10-15 hours. But strapped to a seat my body switches into some nervous state, saying, "gimme food, anything will do, just give it to me, now". As soon as the flight attendants roll out their food trolleys, my saliva production kicks in and I feel like a dog waiting for their owner to fill up my bowl.