The Sedentary Office Body

Story

Connected to · 4

cofactor · 3

Walking as medicine
The harm of sitting is tied to your total daily activity, and you do not need one hard workout to offset it. Treating walking as a medicine you take every day, plus getting up often to break up sitting, is the lowest-barrier approach there is.
Mobility & flexibility
The claim that sitting tightens your hip flexors and makes your glutes lazy has some truth to it, but the fix is not passive stretching. It is standing up, walking, and strengthening the hips and legs so that muscles held in a shortened position get used again.
Walking as medicine
Breaking up sitting and hitting your step count are two separate accounts: someone can reach their daily steps and still sit motionless the rest of the day. More steps are linked with lower risk of death, while the metabolic problems of sitting need to be interrupted by getting up often.

regulates · 1

Calf & Lower Leg
One cost of long sitting is that muscles stop contracting for hours and stop taking fat and glucose out of the blood. The soleus is the fatigue-resistant slow muscle of the calf; in a short lab study in sedentary people, driving it with a seated, repeated heel raise made the rise in blood sugar and insulin after a meal smaller. This is a mechanistic signal, not a proven daily therapy, and it is no substitute for real exercise.

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Stop 1/5

What long sitting does to you

EVIDENCEREVIEW 1

READ THE ORIGINAL

If you sit at a computer eight or nine hours a day, you have probably heard that sitting is bad for you, and probably assumed the problem is bad posture. The research points somewhere else: what matters is how long you sit still, not just how straight you sit.

Data pooled from more than a million people show that people who sit longer have higher all-cause mortality. This is an observed association, and it is clearest in people who move very little; in people with a fair amount of moderate activity each day, the association is much weaker.

So training for an hour and then sitting for the other dozen-plus hours does not reset the risk to zero. What can turn it around is breaking up the long, unbroken blocks of stillness.

One emergency is worth remembering. If, after a long stretch without moving (desk work, a long flight or car ride), one calf or thigh becomes swollen, painful, warm, or red, see a doctor promptly to check for a blood clot. If chest pain or shortness of breath comes with it, call emergency services right away.

Educational content, not medical advice — consult a clinician.

Back

The Sedentary Office Body

Story

Connected to · 4

cofactor · 3

Walking as medicine
The harm of sitting is tied to your total daily activity, and you do not need one hard workout to offset it. Treating walking as a medicine you take every day, plus getting up often to break up sitting, is the lowest-barrier approach there is.
Mobility & flexibility
The claim that sitting tightens your hip flexors and makes your glutes lazy has some truth to it, but the fix is not passive stretching. It is standing up, walking, and strengthening the hips and legs so that muscles held in a shortened position get used again.
Walking as medicine
Breaking up sitting and hitting your step count are two separate accounts: someone can reach their daily steps and still sit motionless the rest of the day. More steps are linked with lower risk of death, while the metabolic problems of sitting need to be interrupted by getting up often.

regulates · 1

Calf & Lower Leg
One cost of long sitting is that muscles stop contracting for hours and stop taking fat and glucose out of the blood. The soleus is the fatigue-resistant slow muscle of the calf; in a short lab study in sedentary people, driving it with a seated, repeated heel raise made the rise in blood sugar and insulin after a meal smaller. This is a mechanistic signal, not a proven daily therapy, and it is no substitute for real exercise.

Read full story

Stop 1/5

What long sitting does to you

EVIDENCEREVIEW 1

READ THE ORIGINAL

If you sit at a computer eight or nine hours a day, you have probably heard that sitting is bad for you, and probably assumed the problem is bad posture. The research points somewhere else: what matters is how long you sit still, not just how straight you sit.

Data pooled from more than a million people show that people who sit longer have higher all-cause mortality. This is an observed association, and it is clearest in people who move very little; in people with a fair amount of moderate activity each day, the association is much weaker.

So training for an hour and then sitting for the other dozen-plus hours does not reset the risk to zero. What can turn it around is breaking up the long, unbroken blocks of stillness.

One emergency is worth remembering. If, after a long stretch without moving (desk work, a long flight or car ride), one calf or thigh becomes swollen, painful, warm, or red, see a doctor promptly to check for a blood clot. If chest pain or shortness of breath comes with it, call emergency services right away.

Educational content, not medical advice — consult a clinician.