Hi,
Tachycardia(
increased heart rate) can be due to various reasons. sometimes it can be just because of anemia ( low
hemoglobin ), exercise, stress or even due to consuming too many caffeinated drinks like coffee, lack of sleep, or anxiety.
However, there are many other detailed medical causes( with many fancy names ) like heart related conditions,
thyroid hormone disorders, any infections.
So first of all focus on your lifestyle. take care of your diet, and sleep. If possible find time for walk or
meditation.
If however, symptoms persist then go for some investigations like
complete blood count, TSH, ELECTROLYTES,and ECG.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr. Milinda Gupta