Heavy legs, swollen ankles, tingling, numbness in the lower limbs... these symptoms are so common after a day spent sitting at a desk that we no longer pay attention to them.
However, they are a sign of poor blood circulation. Your prolonged sitting position has created pressure points, reducing blood flow.
While the immediate discomforts are bearable, they nevertheless have serious consequences. Chronic venous insufficiency can have serious repercussions on cardiovascular health.
Fortunately, it is possible to fight against gravity and stimulate venous return. Let's focus on our solutions to improve your blood circulation through movement and active sitting.
Why does sitting slow down blood circulation?
Since the body is made to move, by sitting for long hours, certain physiological functions slow down, especially blood circulation. Explanations.
The calf muscle pump: the "second heart"
The return of blood from the legs to the heart is ensured by three venous pumps:
- In the foot, the plantar venous pump activates blood circulation with each step, when walking.
- In the calf, the sural venous pump, a real turbo, performs a powerful blood ejection with each contraction of the triceps. The calf muscle pump is even considered the "second heart" of our body because of its efficiency.
- In the thigh, the deep femoral artery carries blood back to the heart.
These venous pumps require muscular activity to function properly. However, when we remain seated for a long time in a static position, venous return slows down and the venous pumps deactivate due to lack of muscle contraction.
After a long time sitting at the office, you feel that numbness in the lower limbs and that sensation of heavy legs, which indicate venous insufficiency.
Compression of blood vessels in a sitting position
In a sitting position, certain areas of our body are subjected to pressure. The compressed veins thus slow down the return of blood to the heart.
Moreover, slowed blood circulation leads to a decrease in tissue oxygenation. This explains why you feel a state of general fatigue when you remain seated for a long time.
Blood stagnation and venous stasis
One hour in a static sitting position is enough to cause venous stasis. Immobility and gravity cause the accumulation and stagnation of blood in the legs, thus slowing down venous return.
Eventually, blood vessels lose their tone and efficiency in bringing blood back to the heart, which worsens stasis.
Sedentary lifestyle is literally "the number 1 enemy of your veins."
Gravity and immobility: why are your legs the first to be affected?
The legs are the first to be affected by blood circulation problems in a static position. Since they are located below the heart, the combined effect of immobility and gravity naturally slows down venous return.
Without movement on your part, especially walking, which reactivates the venous pumps of the lower limbs, blood circulation slows down because the blood must fight against gravity to return to the heart.
After 8 hours sitting at the office, it is common to have heavy and swollen legs, or even to feel pain and cramps.
How to recognize poor blood circulation at the office?
Compression of blood vessels at the back of the thighs and inactivity of the calves slow down venous return. If the symptoms of poor blood circulation seem benign at first glance, they nevertheless send signals to be considered before serious consequences appear.
Common symptoms of poor circulation when working seated
Heavy legs and swelling at the end of the day
Poor circulation in the legs results in a feeling of heaviness and fatigue in the lower limbs.
After a day at the office, it is common to feel tense legs and swollen ankles, or even cramps. These discomforts are linked to prolonged sitting, which slows down venous return and promotes water retention.
Tingling, prickling and cold feet
The first warning signs of slowed blood circulation are:
- Prickling
- Tingling
- Cold feet
- Numb lower limbs
These symptoms should alert you: they are a sign that you need to get up and move.
Night pain and cramps
Leg pain at night related to poor blood circulation is common in sedentary people.
By spending most of your days sitting at the office, the accumulation of toxins, blood stagnation in the legs, and water retention can lead to diurnal venous stasis and cause leg pain that wakes up at night.
Cold and numb hands
Did you think that prolonged sitting hindered venous return from the lower limbs to the heart? Not only!
Sedentary lifestyle slows down overall blood circulation. An unsuitable sitting posture at the office can also compress certain areas of the upper body, which causes numbness and a feeling of coldness in the hands.
Serious long-term consequences of circulatory disorders
Appearance of varicose veins and venous insufficiency
Due to stagnation and blood congestion in the legs, chronic poor circulation can lead to:
- Spider veins
- Varicose veins
- Edema
- Phlebitis if a clot forms.
According to Ameli, "varicose veins are favored by a sedentary life."
Venous insufficiency affects between 11 and 24% of the population in industrialized countries, while it only affects 5% in Africa and 1% in India. A clear testimony to the impact of our sedentary lifestyles on our venous health.
Metabolic and cardiovascular risks
Sedentary lifestyle is cited by the WHO as a factor increasing the risk of heart and vascular diseases.
In prolonged sitting, the accumulation and stagnation of blood in the veins increase blood pressure and decrease tissue oxygenation.
In the long term, a sedentary lifestyle increases the risks of metabolic and cardiovascular disorders, such as:
- Hypertension
- Diabetes
- Phlebitis
- Cardiovascular diseases (stroke, heart failure, heart attack...)
Chronic fatigue and low energy
Everyone can attest to a decrease in tone and fatigue that occurs when sitting for too long. This is the result of slowed circulation and oxygenation, which cause our metabolism to drop. The entire body slows down and you feel:
- Chronic fatigue
- Decreased concentration
- Lack of energy
- Loss of motivation
How to sit properly to promote blood circulation?
Even if physical activity is essential to activate blood circulation, some adjustments to sit properly at the office can improve venous return.
Keep your feet flat on the floor
By keeping your feet flat on the floor when sitting, the body's weight is better distributed and does not concentrate solely on the pressure points of the pelvis.
Contact between the arch of the foot and the floor stimulates venous return.
Finally, this position is more stable and facilitates natural muscle micro-contractions of the calves, essential for activating the sural venous pump and fluidifying blood circulation.
Avoid crossing your legs
Crossing your legs is a habit to banish when sitting. Scientific literature shows that crossing your legs is harmful to vascular health because it:
- Increases pressure on the legs
- Blocks blood circulation
- Raises blood pressure
- Increases the risk of blood clots
Not to mention that the cross-legged sitting position also disturbs postural balance.
Open the hip-knee angle
A hip-knee angle that is too closed strongly compresses the blood vessels located behind the thighs and in the buttocks.
To relieve pressure in the pelvic area when sitting, adopt a posture with: a hip-knee angle greater than 90 degrees, a straight back (not hunched forward), and knees slightly lower than the pelvis.
Change position regularly
Sitting upright, keeping your feet on the floor, and avoiding crossed legs is good, but even with good posture, prolonged immobility slows blood circulation.
The ideal way to reactivate blood circulation in a sitting position is to engage your entire body, muscles, and joints through changing positions.
The best habits to activate circulation at the office
Even if you work sitting in front of a computer, it is possible to adopt good habits to limit static sitting. Here are our tips for integrating more movement into your workday and activating blood circulation at the office.
Get up every 45 to 60 minutes
The human body is made to move. If you spend your days sitting behind a desk, it is important to break away from a sedentary lifestyle by mobilizing your muscles and joints to ensure good circulatory flow.
Get up every 45 to 60 minutes. Take a standing coffee break, go to the restroom, or visit other colleagues' offices, even taking the stairs to incorporate more movement into your daily life.
Active breaks to reactivate circulation
Active breaks are the ideal solution to break away from sitting at the office. Stop working for a short time to get up, walk, breathe, and stretch.
Even 5 minutes of movement are enough to reactivate blood circulation, muscles, and brain oxygenation.
These moments of relaxation are beneficial for the body, but also for the mind: the dynamic break offers you a boost of energy.
Stretches and targeted exercises to restart venous return
Stretches and targeted exercises can be performed every hour to reactivate the venous pumps of the lower limbs and help blood return to the heart.
To do at the office or at home, these simple gestures are essential to prevent the accumulation and stagnation of blood in the legs.
Here are some examples of exercises to reactivate blood circulation at the office:
- Ankle rotations
- Calf flexions-extensions
- Rolling a ball under the foot
You can also perform stretches on an exercise ball chair to relax your legs after prolonged sitting.
Elevate your legs at the end of the day
A simple and very beneficial tip to relieve heaviness and swelling is to elevate your legs at the end of the day.
In the evening, at home, rest your feet on a stool or cushion (elevated 10 to 15 cm above your heart) to facilitate blood flow from your legs back to your heart.
You can also lie on your back on a bed or directly on the floor with your legs raised perpendicularly against a wall. Light legs guaranteed!
Why does dynamic sitting help improve venous return?
Micro-movements and continuous muscle activation
The principle of dynamic sitting consists of sitting not on a classic office chair, but on a ball chair or an oscillating stool that requires you to regularly move your legs and pelvis to adjust your position.
The goal is to combat a sedentary lifestyle and limit prolonged passive sitting to preserve vascular health.
The micro-movements caused by dynamic sitting improve blood circulation because the continuous engagement of muscles stimulates the venous pumps in the legs, thus allowing better blood return to the heart.
Reduction of static compression
In a static sitting position, certain vessels are compressed, particularly those in the gluteal muscles and thighs. A scientific publication demonstrates a significant decrease in blood flow to the lower limbs after 6 hours of sitting.
By adopting dynamic sitting, you limit these prolonged pressure points and regulate blood circulation in your legs.
Better posture and pelvic mobility
Dynamic sitting on a Bloon ball chair continuously engages the calf and leg muscles, as well as the back and abdominal muscles, to adjust your position.
The continuous mobility of the pelvis offers better posture (straighter back), and the micro-movements of the legs facilitate venous return.
The Bloon Active Seat: the preventive "treatment" for heavy legs and the harmful effects of prolonged sitting
The Bloon Active Seat acts as a preventative measure against heavy legs. The oscillation of the ball chair forces the body to constantly adjust. This search for balance engages muscles, increases daily energy expenditure, and at the same time, blood flow.
Its effect is cumulative: you stay active without thinking about it, reducing venous stasis.
Bloon Tip: To make your workday more active, alternate dynamic sitting on a Bloon ball chair at the office with standing breaks and targeted stretches. The ball chair doesn't completely replace physical activity, but it spreads the benefits of movement throughout your workday.
Complementary natural solutions to improve daily blood circulation
NEAT: the invisible movement of everyday life
The concept of NEAT refers to the energy expenditure associated with daily activities, excluding sports. Walking, taking the stairs, gardening, playing with children, cleaning, cooking standing up, DIY... all these activities are part of NEAT.
Since the human body is not designed to remain immobile, increasing your daily NEAT improves your physical and mental health.
At the office, to incorporate more movement into your daily life and limit your time in passive sitting, opt for active furniture such as:
- Ball chair to stay in motion even while sitting
- Sit-stand desk to alternate positions
- Walking pad, to work while walking
- Pedal exerciser to pedal while working
- Active footrest to facilitate changing positions at work
Thanks to the movement they involve, all these remedies limit blood stagnation in the lower limbs. As a result, they spare you the symptoms of blood congestion in the legs (pain, swelling...) due to high pressure in the veins.
Hydration and anti-inflammatory diet
Hydration helps thin the blood. In cases of dehydration, the blood becomes thicker and circulation becomes more difficult, which can cause the sensation of heavy legs. Remember to drink at least 1.5 liters of water to meet daily needs.
Diet is another factor that plays a key role in vascular health.
If you want to avoid heavy and swollen legs (or other long-term cardiovascular disorders), consume salt and simple sugars in moderation.
A diet rich in salt promotes water retention. Simple sugars, meanwhile, have harmful effects on blood circulation:
- They promote blood sugar spikes that weaken the inner wall of blood vessels.
- They create inflammatory states that promote circulatory disorders.
On the contrary, favor foods including:
- Vegetables rich in antioxidants (broccoli, spinach, red cabbage, green pepper, artichoke...) which help preserve the flexibility of blood vessels.
- Omega-3s (rapeseed oil, walnuts, chia seeds, flaxseed oil and seeds...) are known to thin the blood.
- Red fruits, rich in polyphenols and anthocyanins, stimulate blood circulation.
- Foods with anti-inflammatory properties (turmeric, ginger, green tea, garlic, fatty fish, walnuts, olive oil...), beneficial for vascular health and blood circulation.
Thermal variations, compression stockings, and venous electrostimulators
Thermal variations, such as showers alternating cold and hot water jets, are beneficial for vascular tone because they boost blood circulation.
However, excessive heat (sauna, very hot baths) should be avoided if you suffer from circulatory disorders (heavy legs, varicose veins, venous insufficiency...). Under the effect of heat, the veins dilate and their tone decreases, making them less effective at returning blood to the heart.
Devices exist to relieve circulatory disorders, especially in hot weather:
- Compression stockings exert pressure on the legs that promotes venous return and prevents stagnation and blood congestion.
- Massages and lymphatic drainage mechanically activate blood circulation, reduce swelling, and water retention.
- Venous electrostimulation uses electrical impulses to stimulate calf muscle contraction. The famous "second heart" activates its venous pump and facilitates blood flow back to the heart.
FAQ SEO
Does sitting really slow down blood circulation?
Yes, static and prolonged sitting promotes blood stagnation in the legs and leads to a risk of blood congestion. The consequences result in various circulatory disorders such as venous insufficiency, heavy and swollen legs, or varicose veins...
What exercises can restart blood circulation in the legs?
To restart blood circulation in the legs while sitting at the office, you can perform ankle flexions and rotations or stand on your tiptoes. Accessories (pedal exerciser or ball chair) are also very useful for activating blood in the legs.
Is exercise alone enough to compensate for 8 hours of sitting?
1 hour of exercise per week is ineffective if you spend most of your days sitting. The ideal is to break up the time spent sitting with active breaks and to move regularly throughout the day (alternate positions, incorporate micro-movements by adopting active sitting...).
What to do for heavy legs?
Massages and drainage are effective in relieving heavy legs. At the end of the day, elevate your legs and use a cold water jet in the shower to activate blood flow.
How to improve venous return at work?
Incorporate more movement into your workday to promote blood circulation.
Opt for dynamic sitting, on a ball chair or oscillating stool, as well as regular position changes (with active furniture, for example).
Take active breaks during which you move (walking, stairs, stretching...).
What sitting position at the office can prevent heavy legs?
To avoid heavy legs and poor blood circulation, adopt a sitting position with your feet flat on the floor, knees slightly lower than your pelvis, to promote openness and limit blood compression in the pelvic area.
Does crossing your legs cut off circulation?
Yes, avoid crossing your legs at all costs when sitting. It has been scientifically proven that crossing legs slows venous return, in addition to creating postural imbalance.
Why do my legs hurt at night after sitting all day?
Nocturnal leg pain is often a sign of venous insufficiency. By spending the day in a static sitting position, blood and fluids accumulate in the legs. This daytime venous stasis can then lead to nocturnal pain once the legs are at rest.
Conclusion: Moving from a treatment logic to active prevention
Circulatory disorders are not solely linked to age or genetic factors. Our sedentary lifestyles are the main causes of poor blood circulation, as immobility slows venous return.
Before venous stasis appears and eventually leads to harmful consequences for vascular health, it is possible to act preventively.
Maintaining movement throughout the day, even when sitting at the office, is the solution to regulate blood flow. Active breaks, dynamic sitting, NEAT... Through a biomechanical approach, regain light legs, more energy, and preserve your vascular health.