The saying "you sure can't tell by looking at you" in the context of bipolar individuals typically means that, based on their outward appearance,
one might not be able to discern that they have bipolar disorder. Bipolar disorder is a mental health condition characterized by extreme mood swings,
including emotional highs (mania or hypomania) and lows (depression). These internal experiences are not always visible externally.
This phrase highlights a common misconception: mental health conditions often do not have obvious physical signs. People with bipolar disorder
can appear perfectly fine on the outside even when they are struggling internally. It underscores the importance of understanding that mental health
issues are real and significant, even if they aren't immediately apparent to others.