
What Causes Increased Heart Rate Upon Waking Up And During Physical Activity?

Your symptoms are not cardiac related.
Detailed Answer:
Hello!
Thank you for asking on HCM!
I carefully passed through your question and would explain that your symptoms are not related to any cardiac disorder.
Your cardiac performed tests can confirm this.
I would explain that it is quite normal to have a higher heart rate in the morning after waking up and during physical activity. It is just a physiological reaction of your body related to physical or emotional activity.
It is caused by the activation of the sympathetic nervous system, leading to a load of chatecholamines (adrenaline and noradrenaline) in your blood, causing an elevation in your heart rate and blood pressure.
This happens in every normal individual.
Anyway, I would also recommend checking your thyroid hormone levels as a thyroid hormone imbalance can lead to increased fluctuations in heart rate.
Hope to have been helpful!
Kind regards,
Dr. Iliri

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