health
Blood Pressure Increase
Adverse effectBlood Pressure Increase is an adverse health effect in which blood pressure rises. It can involve diastolic pressure, systolic pressure, or both, and these components may change differently.
Blood Pressure Increase is identified here as a health effect. Read the surrounding context before interpreting what the label means.
These are research findings, not promises. Most options have little evidence, and results differ from person to person.
What can cause it
How likely each one is to cause it, most likely first.
Ice Bath / Cold PlungepracticePossible
Based on 6 studies. Strongest study: a randomized controlled trial.
A systematic review pooling randomized and non-randomized human studies reported an acute elevation in blood pressure. A separate review of observational studies associated cold-water immersion with increases in central venous pressure, mean pulmonary arterial pressure, peripheral vascular resistance and pulmonary arterial wedge pressure.
Open the Ice Bath / Cold Plunge pageCyclingpracticePossible
Based on 2 studies. Strongest study: a randomized controlled trial.
In a randomized trial of 24 people, diastolic blood pressure at the end of exercise was +17 mmHg during ECC, while systolic blood pressure remained unchanged. Another randomized trial of 17 people found diastolic pressure at maximal exercise was 16 mm Hg higher during ECC than CON.
Open the Cycling pageTENS / EMS TherapypracticeUnclear
Based on 2 studies. Strongest study: a systematic review of studies.
A 2024 systematic review reported that systolic blood pressure was significantly higher by 5.3 mmHg and diastolic blood pressure by 4.8 mmHg at the end of low-frequency TENS intervention, among 32 people in its blood-pressure analysis. The study designs in the review were not recorded.
Open the TENS / EMS Therapy pageFinnish SaunapracticeUnclear
Based on 3 studies. Strongest study: a non-randomized trial.
In a quasi-experimental study of 45 people, blood pressure reached the stage 1 hypertension range, with a mean of 140/94 mmHg during the fourth session. Another study found that systolic blood pressure increased after exercise in elevated temperatures and after the sauna.
Open the Finnish Sauna pageHigh-Intensity Interval Training (HIIT)practiceUnclear
Based on one study. Strongest study: a pooled analysis of several trials.
A pooled analysis of randomized trials in older adults reported an abnormally high blood-pressure response to exercise, along with mild vasovagal episodes.
Open the High-Intensity Interval Training (HIIT) pageBrain Games / PuzzlespracticeUnclear
Based on one study. Strongest study: a randomized controlled trial.
A randomized trial involving 372 people with a clinical condition reported high blood pressure.
Open the Brain Games / Puzzles pageSwedish (Classic) MassagepracticeUnclear
Based on one study. Strongest study: a randomized controlled trial.
One randomized trial in healthy participants found that LAF massage increased systolic blood pressure.
Open the Swedish (Classic) Massage pageForest Bathing (Shinrin-yoku)practiceUnclear
Based on one study. Strongest study: a non-randomized trial.
In a quasi-experimental study of 38 people with cancer, systolic blood pressure increased by 4.0 mmHg.
Open the Forest Bathing (Shinrin-yoku) page
The expert view shows every study, dose protocol and source.
What can cause it
Interventions reported to bring this on17 listedHighest probability
- →PracticesIce Bath / Cold PlungeCertaintyMediumSourceClinical6 other sources
A systematic review pooling randomized and non-randomized human studies reported an acute elevation in blood pressure. A separate review of observational studies associated cold-water immersion with increases in central venous pressure, mean pulmonary arterial pressure, peripheral vascular resistance and pulmonary arterial wedge pressure.
Who was studied
- Healthy people and patients
Open Ice Bath / Cold PlungeStudy result
Acute elevation of blood pressure
- →PracticesCyclingCertaintyMediumSourceClinical2 other sources
In a randomized trial of 24 people, diastolic blood pressure at the end of exercise was +17 mmHg (21%, P<.001) during ECC, while systolic blood pressure remained unchanged. Another randomized trial of 17 people found diastolic pressure at maximal exercise was 16 mm Hg higher during ECC than CON (95% CI: 7–25 mm Hg, p = 0.003).
Who was studied
- Healthy people and patients
Open CyclingStudy result
DBP was increased at end-exercise during ECC by +17 mmHg (21%, P<.001), while SBP remained unchanged.
Low probability(15)(1)(14)
- →PracticesTENS / EMS TherapyCertaintyLowSourceClinical2 other sources
A 2024 systematic review reported that systolic blood pressure was significantly higher by 5.3 mmHg and diastolic blood pressure by 4.8 mmHg at the end of low-frequency TENS intervention, among 32 people in its blood-pressure analysis. The study designs in the review were not recorded.
Who was studied
- People with a condition
- Diabetes Type2
- Hypertension
- Obesity
Open TENS / EMS TherapyStudy result
the Lo-TENS group exhibited a significantly higher SBP (by 5.3 mmHg) and DBP (by 4.8 mmHg) at the completion of the intervention
- →PracticesFinnish SaunaCertaintyLowSourceClinical3 other sources
In a quasi-experimental study of 45 people, blood pressure reached the stage 1 hypertension range, with a mean of 140/94 mmHg during the fourth session. Another study found that systolic blood pressure increased after exercise in elevated temperatures and after the sauna.
Who was studied
- Healthy people and patients
- Obesity
Open Finnish SaunaStudy result
Blood pressure elevated to stage 1 hypertension range (mean 140/94 mmHg during fourth session)
- →PracticesHigh-Intensity Interval Training (HIIT)CertaintyLowSourceClinical1 other source
A pooled analysis of randomized trials in older adults reported an abnormally high blood-pressure response to exercise, along with mild vasovagal episodes.
Who was studied
- Healthy people and patients
- Elderly
Open High-Intensity Interval Training (HIIT)Study result
Abnormally high blood pressure response to exercise, mild vasovagal episodes
- →PracticesBrain Games / PuzzlesCertaintyLowSourceClinical1 other source
A randomized trial involving 372 people with a clinical condition reported high blood pressure.
- →PracticesSwedish (Classic) MassageCertaintyLowSourceClinical1 other source
One randomized trial in healthy participants found that LAF massage increased systolic blood pressure (P<0.05).
Who was studied
- Healthy people
Open Swedish (Classic) MassageStudy result
whereas LAF massage (P<0.05) increased systolic blood pressure
- →PracticesForest Bathing (Shinrin-yoku)CertaintyLowSourceClinical1 other source
In a quasi-experimental study of 38 people with cancer, systolic blood pressure increased by 4.0 mmHg (p=0.0159; effect size 0.384).
Who was studied
- People with a condition
- Cancer
Open Forest Bathing (Shinrin-yoku)Study result
SBP increased by 4.0 mmHg, p=0.0159, effect size 0.384
- →PracticesFoam RollingCertaintyLowSourceClinical1 other source
A 2021 trial in 15 healthy participants found that systolic blood pressure increased from before to after the intervention.
Who was studied
- Healthy people
Open Foam RollingStudy result
systolic blood pressure significantly increased from pre-test to post-test (p=0.002)
- →PracticesHot YogaCertaintyLowSourceReference knowledge1 other source
Blood pressure can rise temporarily during sessions as thermal stress and vasoconstriction affect the body, particularly in the early heat-adaptation phase.
Open Hot YogaStudy result
Acute transient rise in systolic and diastolic blood pressure during sessions due to thermal stress and vasoconstriction in early heat adaptation phase.
- →PracticesBreathworkCertaintyLowSourceReference knowledge1 other source
Pharmacology references describe a brief rise in blood pressure during breath holds with straining or fast, forceful breathing; slow breathing usually lowers it.
Open BreathworkStudy result
Breath holds with straining and fast, forceful breathing can raise blood pressure briefly during the session; slow breathing usually lowers it.
- →PracticesCardioCertaintyLowSourceReference knowledge1 other source
During hard effort, blood pressure can rise and then settle afterward; an exaggerated rise matters for people with uncontrolled high blood pressure.
Open CardioStudy result
Blood pressure rises during hard effort and settles after; an exaggerated rise matters for people with uncontrolled high blood pressure.
- →PracticesCoffee EnemaCertaintyLowSourceReference knowledge1 other source
Absorbed caffeine can temporarily raise blood pressure, particularly in caffeine-sensitive people or those using additional stimulants.
Open Coffee EnemaStudy result
Absorbed caffeine can transiently raise blood pressure, particularly in caffeine-sensitive people or those using additional stimulants.
- →PracticesDanceCertaintyLowSourceReference knowledge1 other source
A pharmacology reference notes that vigorous dancing can raise blood pressure during a session, potentially causing a high reading or symptoms in people with poorly controlled high blood pressure.
Open DanceStudy result
Vigorous dancing raises blood pressure during the session, so people with poorly controlled high blood pressure can get a high reading or symptoms while dancing.
- →PracticesMassageCertaintyLowSourceReference knowledge1 other source
A pharmacology reference says painful deep-tissue or trigger-point pressure can briefly raise blood pressure through a stress response; gentle, relaxing massage usually lowers it.
Open MassageStudy result
Painful deep-tissue or trigger-point pressure can trigger a stress response that raises blood pressure briefly; gentle relaxing massage usually lowers it.
- →PracticesStrength TrainingCertaintyLowSourceReview1 other source
A 2026 review described extreme elevations in systolic and diastolic BP during resistance exercise.
Who was studied
- People with a condition
Open Strength TrainingStudy result
Extreme elevations in systolic and diastolic BP during resistance exercise
- →SupplementsChagaCertaintyLowSourceAnecdotal1 other source
This effect was mentioned in 2 of 229 Reddit reports discussing it.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Blood Pressure Increase is an adverse health effect in which blood pressure rises. It can involve diastolic pressure, systolic pressure, or both, and these components may change differently. For example, Cycling is associated with an increase in diastolic pressure while systolic pressure remained unchanged in the cited finding. The label describes a measured change, not a specific disease.
How interventions help
Blood pressure increase can reflect different patterns rather than one consistent response. Some interventions were linked with changes during or around a session: Cycling was associated with a rise in diastolic blood pressure at end-exercise, while systolic blood pressure remained unchanged. Finnish Sauna was associated with elevated blood pressure during a later session, and Ice Bath / Cold Plunge was associated with increases in several cardiovascular pressure measures. These findings suggest that timing and the immediate setting of an intervention can matter when interpreting a blood pressure response.
Other interventions were studied as supplements or products, but their reported findings are less uniform. Some were described as causing increased blood pressure or hypertension, while others had a quantified blood-pressure comparison. For several of these interventions, the information does not establish how quickly a change began, how long it lasted, or whether it continued after stopping. TENS / EMS Therapy was linked with autonomic disturbances, including blood pressure fluctuations, rather than a single predictable direction of change.
The findings also span mixed populations, people with clinical conditions, and studies in which health status was not specified. A result observed in one of these settings should therefore not be assumed to apply in the same way to every person or every pattern of use. The reported relationships describe findings in particular study contexts, not a guaranteed response each time an intervention is used.
Choosing guidance
The timing of the exposure matters. Cycling and cold-water immersion are most relevant to changes occurring during or soon after a session, while caffeine-related effects may appear acutely. Green Tea Extract (EGCG) also illustrates why preparation and time frame matter: caffeine may raise blood pressure acutely, even though longer-term green tea studies may show neutral or modestly lower average pressure. This does not make the short-term and longer-term findings interchangeable.
Dose and duration are not defined consistently across these options. Where they are specified, the findings include CBD (Cannabidiol) at 300 mg as an acute single dose and Beetroot Extract at 140 mL providing approximately 8 mmol nitrate. Reports involving American Ginseng and Panax Ginseng point to higher doses, stimulating products, or prolonged use, whereas the potassium finding concerns very high potassium supplementation or excretion. These distinctions limit direct comparison between options.
The evidence also applies unevenly to different people. Clinical findings come from human research, but some entries rely on pharmacology references, theoretical reasoning, or anecdotal reports rather than direct clinical testing. Studies involving mixed health status or unspecified health status may not predict what happens in a particular person, and findings from clinical-condition populations may not generalize to everyone. For decisions where the timing, dose, or personal relevance is important, the most useful comparison is whether the finding came from a human study, whether exposure was brief or prolonged, and whether results were consistent across studies.