Just one mroe of millions of examples of how real dreams are. I dont remember the exact quote, but in waking life, the first guy to talk about dreams, in the room with the guy playing the ukulele, he said that when were in a dream there is no real difference between the dreaming perception and the waking one. But of course dreams can be more or less intense and can tweaked indefinately. So hunger pains can be quite intesne in a dream. I know that I felt muscle fatigue, very intensly in a lucid dream.