Blood Test…. Ever had one? Silly question, huh?

I heard an interesting analogy the other day where someone equated performance feedback with a blood test.

You might have low iron, a thyroid issue…. If you never had a blood test, you might never know. Now that doesn’t mean you DON’T have low iron or a thyroid problem, you just don’t KNOW you have the problem because you didn’t have the blood test.