Weird dreams are best kept to yourself. And while we’d enjoy regaling you with tales of a recurring storyline centring on a lift, an iron, and a block of tasty cheese, we’re zipping it for your benefit and ours. What’s it all about? Well, clearly we like cheese and ironing. Oh, you mean weird dreams more generally? New research says it’s a way for our brains to break the overfamiliarity with what it does say in and day out. “By injecting some random weirdness into our humdrum existence, dreams leave us better equipped to cope with the unexpected,” says one analysis of the study. Sweet dreams…