This means:
“If you regularly wake up with a dry mouth, it could be caused by several things, and the post claims the symptom may provide clues about your health.”
Breakdown
“Waking up with dry mouth?” = your mouth feels unusually dry when you wake up.
“Here’s what your body might be telling you” = suggests the symptom could be a clue that something is affecting your body.
It may be related to mouth breathing, nasal congestion, dehydration, medications, alcohol/tobacco use, or sleep apnea, among other causes.
Tone
This is a health-awareness/clickbait headline. The phrase “what your body might be telling you” creates curiosity without revealing the actual causes.
A simpler version:
“Why do you wake up with a dry mouth? Common causes and what you can do.”
