What bores you?
Most things that repeat over and over bores me! Like doing the same things in the same manner day after day! You get to the end of your life and look back and your whole existence has been basically just that “one day!” Terrible …
Other things that “repeat” and bore me? Doing pretty much the same workout every day! So boring!
Running a long race and repeating any part of the race more than once! Oh so BORING!

