My resting HR is in the 40’s but I’ve had high blood pressure for over ten years and I exercise my ass off. and sit at 141lbs. So definitely not over weight. Doc says it’s genetic. I only drink water, green tea and coffee in the morning. I’ve tried eliminating anything that could cause it to be high (except my coffee) and the only thing that slightly worked was eating healthy high fats and less carbs but my cholesterol went through the roof. So I’m back to a normal healthy diet with a low dose of BP meds.