So I was reading an article about how even though we have two eyes, we only see one scene, but with a slight sense of the 3D aspect of them. This is why we can avoid running into many objects in settings such as a house.
Then I remembered reading an article about someone with a sixth finger, and being able to move it just like any other finger.
Now since you are reading this voluntarily, I will take that as your permission to mess with your mind, more specifically your dreams.
I had a dream to where I had 4 arms, and I could use them all freely just as I use these two arms, and ten fingers to type out information.
Now that I have your attention:
We are going to try to get you to have a dream where you can add more arms, legs, heads, mouths, noses, eyes, anything.
Our brains are like computers, except instead of a mouse and keyboard, we have hands and legs, instead of a webcam and microphone, we have eyes and ears. We can plug in many input devices into a computer, such as multiple webcams and get different views, and more than one speaker as well, right?
So I think its time you experiment and try to add a new input. If you believe it is possible, then it will become possible in your dreams!
While dreaming, try to enter a mode of Lucidity by your own means ( I have only done it once accidentally so you're on your own there ).
Then walk into a bathroom (we want to make this as EASY as possible and as believable for your subconscious as well,) and then look into the mirror.
You can see yourself clearly, no?
Then close your eyes and don't forget to close your 3rd eye. What? A third eye? Yes! don't forget the one behind your head. Now imagine what you would see behind you, the shower perhaps? and what you would also see in front of you.
Now open your eyes, first the one in the back of your neck and see the shower! (might want to remember to put that hair up and out of your eye too! And then the regular two, and see what is in front of you as well as what is behind you.
Now there are two ways to do this, either to combine the 3rd eye's perspective into your two normal eyes' vision.
Or to think of yourself as viewing two computer screens that display what your eyes see.
It is very hard to do and I have only done it once by accident, So good luck and good dreaming!
As for having four arms or something of that sort, just pretend that they were numb and close your eyes and shake them about and get them feeling again.
Tell me if its possible for you, I am still working on recall :)