LifeSource Health Line (Toll-Free): 1-888-726-9966
LifeSource Health Line (Toll-Free): 1-888-726-9966
ABOUT BLOOD PRESSURE
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What Is Blood Pressure?
Blood pressure is the force exerted by blood against the
walls of the arteries. Systolic pressure occurs when the heart
contracts; diastolic pressure occurs when the heart expands.
Blood pressure is measured in millimeters of mercury
(mmHg).
What Affects Blood Pressure?
Blood pressure is affected by many factors: age, weight, time
of day, activity level, climate, altitude and season. Certain
activities can significantly alter blood pressure. Walking can
raise systolic pressure by 12 mmHg and diastolic pressure
by 5.5 mmHg. Sleeping can decrease systolic blood pressure
by as much as 10 mmHg. Taking your blood pressure
repeatedly without waiting an interval of at least 3 minutes
between readings can also affect it.
In addition to these factors, beverages containing caffeine or
alcohol, certain medications, emotional stress and even
tight-fitting clothes can make a difference in the readings.
What Causes Variations In Blood Pressure?
An individual’s blood pressure varies greatly from day to day
and season to season. In hypersensitive individuals, these
variations are even more pronounced. Normally, blood
pressure rises during work or play and falls to its lowest
levels during sleep.
Systolic Blood
Pressure
Diastolic Blood
Pressure
200
150
100
50
0
Fluctuation within a day (case: 35 year old male)
Arising
Start
W
ork
Telephone
Argument
Sleep
Leave
W
ork
