Your heart pumps blood to your legs.
But you have to go back up against gravity. From your feet, through your calves, back toward your heart.
Your body has a second pump for this: the calf muscles.
With every step, the calf squeezes the veins and pushes the blood upwards. Small venous valves prevent it from sagging again.
This is how it should work.
The problem: Our everyday lives shut down this pump.
We sit too much. We stand too long. The feet hardly move. The calf doesn't work enough, even though it's constantly needed.
Then the blood pools in the leg veins. The pressure is increasing. Fluid is pushed into the tissue.
These are the swellings you see in the evening: missing ankles, heavy calves, tight socks, squeezing shoes.
It often gets worse over the years.
The connective tissue becomes softer. The veins give way more quickly. The flaps no longer work as powerfully as they used to.
That's why it happens so often to women over 50.
Not because they're doing anything wrong.
But because your body works every day against gravity, age and everyday life.
This is exactly why “move more” is no longer enough for many people at some point. The calf pump needs external support.
And then I realized:
My stockings had just squeezed my legs together.
But they never really got the pump moving again.