Answer:
Fast heart rate
Explanation:
Tachycardia means a fast heart rate. This is caused due to an abnormal activity or occurrence such as exercise, fear, surprises, etc.
Tachycardia lasts for about 10 to 15 minutes and it should be treated by a doctor when out of range. During tachycardia, the heart pumps less blood to the body which is a dangerous thing to the body system.
