Which is a common sign of low blood sugar?

• A. Excessive thirst
• B. Feeling weak and shaky
• C. Muscle cramps
• D. Nausea and vomiting

Answer: (B)

Low blood sugar triggers an adrenaline-driven response that commonly shows up as feeling weak and shaky. This early sign comes from the body's effort to raise glucose quickly, and shakiness is one of the most characteristic cues of hypoglycemia. Excessive thirst points to high blood sugar rather than low, muscle cramps are not a typical sign of low glucose, and nausea or vomiting can occur with many conditions but isn’t a defining sign of hypoglycemia. In firefighter rehab, recognizing the shakiness promptly helps you identify hypoglycemia and respond quickly to restore glucose and maintain safe recovery.