5. Odd Heart Beats
A racing heart or the feeling that your heart has skipped a beat is normal. You might have had too much coffee or not enough sleep. Maybe you overdid the workout.
If it happens often or the skipped beat occurs several times in a row, you need to contact your doctor. Abnormal heart beats may cause anxiety or unease, or you may feel it in the neck but not chest. If these are associated with any other symptoms, contact a doctor.