Having temporary spikes in blood pressure isn't really that bad but if your blood pressure goes too high and stays that way or gets high too often then it can damage your blood vessels and heart and high blood pressure can also lead to stroke, heart disease, and even a heart attack if the blood pressure isn't lowered or you don't get looked after by a doctor.
A natural home remedy for lowering your high blood pressure is to drink plain water or mix some Apple Cider Vinegar along with Lemon Juice, Honey and warm water and make a drink out of it to lower your blood pressure with the Apple Cider Vinegar.