The condition (Low Blood Pressure) is manifested through symptoms such as fainting and dizziness. Severe cases can deprive vital organs of nutrients and oxygen which can indicate neurological, endocrine or hearth disorders. Regardless that blood pressure can significantly vary from one to another person, reading of 60 (mm Hg) or less diastolic - bottom number, and of 90 mm or less of systolic pressure - the top number of the reading, indicate that you might be suffering from Low Blood Pressure. On the other hand sportsmen and people that regularly exercise, hypotension is an indication that they are in good physical condition. Therefore, many people that exercise regularly may have low or borderline low blood pressure, but at the same time not to suffer from its effects as others do.
The important thing to remember is that HYPOTENSION is TREATABLE. However, it is very important to get to the root of it as soon as possible so that it can be treated effectively. Regardless of what you learn and read about it on the internet or in medical books, the best course of action is to make an appointment with your doctor and seek for his advice. What you read here is to help you better understand what you are dealing with as well as to get a better comprehension of the therapy prescribed by your doctor.
References: http://www.nlm.nih.gov/medlineplus/ency/article/007278.htm http://www.medicalnewstoday.com/articles/159609.php