High blood pressure

What it is

Blood pressure is the force in the arteries. It rises when the small vessels are constricted, when the larger arteries stiffen and lose their ability to buffer each heartbeat, and when the systems that regulate it are chronically switched to a higher setting.

The reason it is worth treating despite feeling like nothing is that the damage is cumulative and structural - to arteries, kidneys, eyes, heart muscle and brain. Exercise addresses several of the mechanisms at once, which is why it works rather than merely helping.

What it feels like

• Usually nothing at all, which is the problem
• Occasionally headaches, particularly at the back of the head in the morning
• Sometimes noticed only at a routine check or a pharmacy machine
• Very high pressure can cause visual changes, nosebleeds or breathlessness, which is an urgent situation rather than a symptom to monitor
• Often discovered alongside high blood sugar, high cholesterol and central weight gain

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Arterial stiffening with age and inactivity

Healthy arteries expand with each beat and absorb the pressure spike. Stiff ones do not, so the peak pressure rises. Stiffening is driven far more by inactivity than by age alone.

Increased peripheral resistance

The small arterioles set most of the resistance in the system. When they are chronically constricted - by sympathetic tone, by endothelial dysfunction, by inflammation - pressure rises everywhere upstream.

Excess body fat, particularly around the middle

Central adiposity raises sympathetic activity, worsens insulin resistance and increases blood volume. It is one of the strongest modifiable drivers.

Salt intake and the kidney's setting

In salt-sensitive people, and that is a large minority, sodium intake shifts the pressure the kidney defends. Most dietary sodium comes from processed food rather than a salt cellar.

Alcohol

Regular drinking above modest amounts raises blood pressure in a dose-dependent way, and cutting back lowers it within weeks. It is one of the fastest-acting changes available.

Poor sleep and sleep apnoea

Untreated obstructive sleep apnoea is a major and frequently missed cause, particularly where pressure stays high despite treatment. Snoring plus daytime sleepiness plus resistant hypertension is a pattern worth investigating.

Chronic stress and sympathetic tone

Sustained stress keeps the system in a higher-pressure setting, and the shallow, fast breathing that comes with it reduces the parasympathetic braking that would otherwise lower it.

Loss of muscle mass

Muscle is where most glucose disposal and a great deal of vascular conditioning happen. Low muscle mass is independently associated with higher pressure, which is part of why strength work helps.

Medication and other conditions

Some anti-inflammatories, decongestants, steroids, the combined contraceptive pill and some antidepressants raise blood pressure; so do kidney disease and several hormonal conditions. Worth reviewing if pressure is stubborn.

Genetics and family history

A strong family history genuinely raises risk and does not remove the benefit of any of the above. It changes the starting point, not the direction of travel.

Who tends to get it

• Adults over about forty, in whom prevalence rises steeply
• Anyone carrying excess weight around the middle
• People with a family history of high blood pressure or early heart disease
• Snorers and anyone with suspected sleep apnoea
• People who drink regularly above modest amounts, or eat a lot of processed food

What makes it worse, and what settles it

The qFIT routine for this

Ready-made routineBlood Pressure & Isometric Strength

qFIT already has this one built. It runs massage first, then stretching, then strength — the order that works on a body that is already sore — and every activity in it carries the reason it is there.

The button below opens your Checklist with this routine already selected, so instead of your whole list you land on just its Categories, Targets and Exercises, each with its checkbox, ready to tick as you work through them.

Have more than one problem? Tick yours under My Problems on My Profile and your Checklist's Routine list gains Recommended for my problems — every routine for the problems you picked, merged into one. Your picks stay private; that filter is the only thing they feed.

Get it checked if…

Uncontrolled BP above 180/110 needs clearance first; never hold the breath (Valsalva) against load

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

Exercise produces measurable reductions within four to eight weeks and the effect is maintained only while the exercise continues - stop, and pressure drifts back within a few weeks. Isometric training is worth knowing about because the effect size in trials is large for a small time commitment. None of this replaces prescribed medication, and changing or stopping a tablet is a decision for the person who prescribed it, not something to do because the numbers looked better.

Prevalence basis: NHANES under 2017 ACC/AHA criteria

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.