21.   His heart began to race, his palms became sweaty and he felt faint.

22.   His heart begins to pound like a jackhammer.

23.   Her heart began to pound.

24.   His heart began pounding, and his eyes, although he tried to avert them, stayed fixed upon Croker Concourse.

25.   His heart began to beat wildly.

26.   I heard in his words the hint of a future, and my cautious heart began to come out of hiding.

27.   Immediately my heart began pounding and my mouth went dry.

28.   If the heart begins to fibrillate, or beat ineffectively, it generates a powerful electric jolt.

29.   My heart began to race.

30.   My heart began beating hyperactively, as if there were a child in front of me with math homework.