Can low blood pressure be caused by over-exercising?

Low BP and exercise? If you're exercising and not rehydrating yourself through drinking water and/or electrolyte-replenishment drinks, then I would think in the short term that your BP could drop while exercising. .
Not usually. Unless there is valvular heart disease or hypertrophic cardiomyopathy. BP will increase normally during exercise but help to improve BP over the long run.

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What is the cause of low blood pressure?

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