Pace back and forth.
If you need to work out elements in your plot so it all makes sense, I recommend pacing (walking) back and forth.
I recommend this because it always works wonders for me. I think of a plot and what it needs, what it's lacking; maybe something about a character, or what is the proper chronology of events so plot elements happen in the correct order, and I pace back and forth thinking of the problem and every single time I come up with great ideas in just a few minutes that I hadn't thought of before.
Pacing is like a magical ritual that always produces results. Somehow the act of physically walking back and forth in the same limited space triggers the imaginative powers of the mind and great ideas rush to the surface.
I’m sure the biological scientists will figure out why it happens--the technical details, but for now, I just know it works, therefore I recommend it if you need some great plot ideas for your narrative or have a problem with the plot you haven’t been able to solve.
Try pacing back ands forth like I do.