Quiz: Muscle Cramps
Question 1 of 3  

A cramp is a sudden, involuntary, and usually painful contraction of a muscle or group of muscles. Which of the following is the most common cause of muscle cramps?

  • A.

    Old age

  • B.

    Overuse of electrolyte drinks

  • C.

    Poor health

  • D.

    Vigorous exercise

Am I correct?