Why my heart beats so fast

There can be many reasons why your heart may be beating faster than normal. Some common causes include:

Stress or anxiety: Stress and anxiety can cause your heart rate to increase, as your body releases adrenaline and other hormones in response to these emotions.
Exercise: Physical activity can cause your heart rate to increase as your body pumps more blood to your muscles.
Caffeine or nicotine: Consuming caffeine or nicotine can cause your heart rate to increase as these substances are stimulants.
Hormonal changes: Hormonal fluctuations, such as those that occur during menstruation or menopause, can affect your heart rate.
Medications: Some medications, such as asthma medications, decongestants, and weight loss drugs, can increase your heart rate.
In some cases, a fast heart rate can be a symptom of an underlying medical condition such as:

Anemia: low level of iron in the blood
Thyroid problems: an overactive or underactive thyroid gland can affect the heart rate
Cardiac arrhythmias: abnormal heart rhythms
High blood pressure
Heart disease
It’s important to see a doctor if you have concerns about your heart rate. They will be able to perform an examination, take your medical history and possibly run some tests to determine the cause of your fast heart rate and recommend the appropriate treatment.