<s>[INST] I have been tracking my bp and pulse now for two weeks.  I have gone to a no added sugar and no added salt diet.  The second week I have added a half an hour of aerobic exercise.  My average heart beat has increased and my bp has decreased.  Why sould my heart berat increase? [/INST] Hello,I passed carefully through your question and would explain that your symptoms could be related to anxiety. Increased heartbeat could also be related to some metabolic disorders like chronic anemia, thyroid gland dysfunction, blood electrolytes, and etcetera. For this reason, I would recommend consulting with your attending physician and performing some tests: - Complete blood count - Blood electrolytes - Thyroid hormone levels - A resting ECG. Hope I have answered your query. Let me know if I can assist you further.Regards,      Dr. Ilir Sharka </s>