lower number for blood pressure
What's too high for the top number (systolic) is simple: Anything above 160 is an emergency â head for the ER immediately. What's too low for the bottom number (diastolic) varies. It measures the pressure in the arteries when your heart muscle relaxes between pumps, so you want it to be low. The normal range is 60 to 80, but lower is better. Generally speaking, if your dad can stand up easily and talk to you, it's not too low.