I Have Weird Dreams

Do you dream about walking on creaky footbridges with a great abyss below, climbing dangerous metal constructions and do some horizontal hand over hand climbing? I have a dream like that from time to time and don't understand why since I've never been in any of these situations. I don't think I would be able to do horizontal hand over hand climbing even if my life depended on it. But I do it in my dreams so often.