With exercise my heart beats fast and I feel dizzy, is it normal?

Question: If I exercise, my heart beats fast, also when I wake up from a nap or if I get nervous and sometimes even get dizzy. Should I be worry? Cristina (Buenos Aires).

Answer: When one becomes nervous, the stimulus to his central nervous system increases and one of his responses is the secretion of substances such as adrenaline. Dizziness in these circumstances can be caused by multiple causes, although one of the most frequent is hyperventilation (increased respiratory rate). In any case, in the face of these symptoms, the ideal is that your doctor can explore you and make a correct diagnosis.

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