The "dive reflex" is commonly associated with the sport of swimming, particularly in competitive techniques like diving and underwater performance. This reflex is a physiological reaction that occurs when the face is submerged in water, triggering a series of responses like bradycardia (slowing of the heart rate) and peripheral vasoconstriction. Such responses optimally prepare an athlete for underwater activities, providing advantages in events requiring breath-holding and resistance to cold, enhancing performance in competitions.