You often can reduce or prevent changes in
your heart rate or rhythm.
Prevent fatigue by getting plenty of sleep and
rest. If you become overtired, your changes in heart rate or rhythm may be more
severe or occur more often.
Cut back or eliminate caffeine,
including coffee, tea, colas, and chocolate. Some nonprescription medicines,
such as Excedrin, contain caffeine. Caffeine increases your heart rate and can
cause irregular rhythms.
Cut back or eliminate alcohol and tobacco,
which also contain substances that increase heart rate and can cause irregular