Why is my characters hand spinning in a circle? I am using Blender 2.8. I have been trying to make a character I just rigged dab (because it is a simple movement), but early in the video my character's hand spins 360 degrees along the Y-Axis in the frames between my two keyframes. I have tried rotating the final position 360 degrees in all directions, but the hand is still spinning in a circle. Why, and what could I do to prevent this? Here is the render. It is a short video, so I couldn't attach it to this post. Thanks for your help!

Edit:
Here is the *.blend file.
This is a very common error/mistake in the animation part of the blender. I am pretty sure that you have a keyframe with a value like '24' right next to another keyframe with a value of '384' (or some values like that). The keyframes are so close to each other and so different, that when they are played, they make the hand move super fast that way.
To fix this, I would delete the keyframes and remake them with smaller values.