According to Lauri, dreams of a sexual nature feel real because your body doesn't know the difference between a dreaming event and waking event at that point in time. "[Your body is] going to react the same," she says. "So while you're in the throes of passion in your dream, your brain is releasing those same signals to all the nerve endings in your body—especially in that special area." Why do dreams suddenly switch scenes? "[Dreams] don't necessarily follow the logical conscious timelines that we're used to," Lauri says. But that doesn't mean there isn't a reason behind the madness—abrupt shifts in time and place might be showing you how one thing can lead to another, she says. For example, if you're in the grocery store buying cookies and cakes, then suddenly you're in jail, Lauri says your dream may mean you need to watch your fat and calorie intake or you'll end up in the nutrition pits!