I’m very much immersed with the technical side of animation a lot of the time and I was never someone who drew a lot  (part of why I like CG so much!) but I notice that a lot of the better CG animators tend to draw, even if just stick figures to do some thinking on the page before heading into Maya to wrestle with a 3D character rig. Recently I’ve been doing some quick and loose 2D motion studies in TV Paint as a way to work on that.
I find it a fun way to analyze reference, in this case quite a silly skip from an episode of Key and Peele. After drawing the main poses I put the reference away and pushed the timing and spacing a little to make it feel a bit more animated. If I was a proper 2D animator the next step would be to clean up the drawings but in my case I’d be more likely to use this as a planning stage and do the clean-up as a CG pass in Maya.