I used to visualize more as a kid. Since then, I haven't been much of a visualizer; I'm more of a verbal thinker these days. However, last night I was giving the visualization a go. I visualized a cube with contrasting colors on opposite faces. Originally, red was facing me and blue was on top. I forgot to make left and right face colors, so those faces didn't exist. I then tried rotating and visualizing the cube instead of relying on rote memory to remember which color belonged to which face. I then added a bouncy ball moving through the hollowed cube. I believe, if I practice mental exercises like these, my visuospatial reasoning skills can improve. My verbal intelligence doesn't need the same kind of practice.
It actually did feel kind of funny. It felt almost like blood was starting to flow to a different part of my head, creating a slight tingling sensation. I would say I felt this towards the top of my head just slightly left of center and somewhat towards the back side of the head.