You can actually feel the larynx rise in full effect if you put your index finger on your Adam’s Apple and swallow. The front-most portion will literally shift and tilt as the food or liquid goes down!
In a perfect world, your numbers year to year should be pretty consistent, which will put them at ease. Unfortunately, that’s rarely the case with 1099 contractors (especially artists, songwriters, etc.). There’s great years, good years, and bad years. That’s just the way it is.