Do you believe in mental abilities? Do you have any?

There's no scientic explanation, but there are many theories.

One is that the electromagnetic waves of the brain affect the object. There are many many more, though this is the one I think is most reasonable out of the few I found.

Go turn on an X-Ray and try to lift a book with it. And brains don't use electromagnetic waves. We use calcium and sodium ions. So even if electromagnetic waves could move an object, we don't have any inside our heads. Besides, if we did have waves inside of our heads, if they were ultraviolet or a higher frequency we'd all die of brain cancer.

If that's one of your best scientific theoreys, then once again I say you can't prove it scientifically. However, it still may lay in another different part of existence.