Blood pressure variations during the day 3


In this first of many blood pressure experiments, I used a home blood pressure monitor (upper arm cuff), to measure my blood pressure during my waking day.

The readings were not taken at specific intervals, and I have made no attempt to show on this graph when I ate food, did exercise, drank coffee, or anything else that might affect blood pressure. The whole point of this experiment was just to see how my blood pressure varied throughout the day.

Here are my results:

Time
Upper (systolic)
Lower (diastolic)
08:12
131
88
09:44
139
89
11:36
139
85
13:45
135
86
15:02
130
84
16:37
138
87
17:34
127
78
18:09
119
76
19:28
135
82
20:45
122
78
21:50
115
72
22:46
122
75

Average Blood pressure over the day: 129/82

Here is the chart of this data:

fluctuationsduringtheday

The fluctuations were not as big as I anticipated, but one thing I have noticed is that my blood pressure does tend to reduce as the evening progresses.

We have to be careful to draw any conclusions from this blood pressure data, but clearly, there is some variation during the day.

I will be looking at specific influences in other experiments, and how they affect my blood pressure, so look out for those. If you are interested in doing your own experiments, or just monitoring your own health with a blood pressure monitor, I recommend this one:

omron blood pressure monitor cuff

Omron Cuff Blood Pressure Monitor on Amazon


About Andy

Andy writes for a number of health related sites but has always been fascinated by alternative medicine and home remedies. His deep interests in nature and the body's innate ability to heal itself (given the right condition) have lead him to a pivotal time in his life - and so, Holistic Home Fitness was born. While it's relatively new at the moment, Andy wants to build this site into a huge reference site for a more holistic approach to health and fitness.


3 thoughts on “Blood pressure variations during the day

  • Diane

    Andy, thank you for providing your readings over the course of a day – I sometimes have these drastic spikes in blood pressure (which I feel immediately), for no apparent reason. I have tried to time them to different times of the day, activity, food, etc, but can find no link. I wonder if you physically noticed the lower reading at 18:09 before you actually took the reading. Also, you said you were surprised the fluctuations were not as big as you anticipated, and I wonder, too, if that is because you sometimes feel that your blood pressure is much higher than “normal”.
    I’d appreciate your comments, and look forward to seeing further experiments from you.

  • Andy Post author

    Hi Diane
    I actually don’t feel a thing, and cannot tell whether my blood pressure is high or low. Sometimes I feel a little weak and think it must be low blood pressure, but when I take my b.p. it’s normal.

    I haven’t looked yet at food, but I did look at activity and caffeine/non-caffeine coffee.

    You can see all of my current experiments here:
    http://onetwentyovereighty.com/blood-pressure/blood-pressure-experiments/

    Note: Since the early experiments, my bp has come down to normal (in fact it is usually around 110/70 now) thanks to a healthier diet, and losing a lot of weight through exercise.

  • Rexy

    I have been doing the same experiment as you are doing. For some reason, the trend in my blood pressure in a day is opposite to yours. My blood pressure increases as the day progresses. In the morning, my blood pressure would be at 100/70. Then during the night, it would go high to 130/85. Sometimes, 140/95. I don’t know why. Maybe because I feel so tired and stressed out after coming home from work. This only happens on weekdays too. On weekends, my blood pressure stays at the normal levels during the whole day .

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