<s>[INST] Hello doctor, I am a 19 year old male. I am 15 to 20 pounds overweight. My height is 6 foot 1 inch. I stopped exercising eight months ago. I do not have a calcium deficiency. I am currently fasting for religious purposes. I ate a whole wheat bagel with a glass of milk at 4 AM. It is now 10 AM.  My heart rate is below 60 bpm. Could I be having a problem with the SA or AV node? Is the sodium or potassium influx or efflux of plasma membranes not enough? I do not know if this is relevant, but I drank one and a half bottles of Gatorade at 10 PM yesterday. What is wrong with me? Is it due to my sedentary lifestyle? I spend most of my day studying. [/INST] Hello. This will help you. For more information consult a cardiologist online --> </s>