Your brain needs: a fixed amount of blood flow at all times. When you stand up, in normal adults not taking medicines, the "auto-pilot" in your body will instantaneously maintain this flow by immediately increasing either your heart rate or blood pressure or both to avoid you from fainting.
Answered 7/30/2018
3.9k views
Bp changes: When you stand up your bp May rise transiently and you may feel the stronger pulsation in your scalp arteries. Check your bp sitting and then after standing up to see if this reaction occurs. Of course if your BP is too high sitting or standing, you must consult your physician.
Answered 8/17/2017
3.9k views
Pulse: What you are hearing and feeling is a surge of blood from your lower extremities to your head .Thisis a normal sensation and dies not mean that you have high blood pressure
Answered 9/29/2016
3.9k views
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