That statement sounds funny - maybe even hypocritical! - from a someone who waxes philosophically on exercise on the daily.
Keep in mind: it's called "Exercise // Thinker", not "Exercise // Over-Thinker".
Yes, there is a limit to the value of thought as it precedes action.
Processing your exercise by dialing in to your most meaningful goals, practicing and progressing versus "just doing it", and looking at your "self" and its relationship to your exercise process are all valuable things.
But (and it's a big but), eventually, action is necessary in order to make exercise progress.
Striking the right balance between thinking and doing in exercise is the key. Without the former, you will likely fizzle or get injured in your efforts. They will have been done in vain at best.
Without the latter, you will remain static. If you (or we) are even considering this exercise conversation, then static is the either opposite of what you want or worse.