Whenever this topic comes up among musicians, I notice that there tends to be a "one-upping" situation that results. One musician says they were coughing while performing their third-year recital. So their friend points out that they were playing a professional audition on a fever.
But as soon as you realize that you can't compare the limits of one body with another, you'll see that this kind of one-upping is completely meaningless. No two people are the same.