If you didn't have veins, you couldn't have blood circulate through your feet and they would rot.
The same as it does when you are standing on your feet. Your heart pumps and forces the blood through your body.
The person will die if the blood does not circulate. Blood is necessary to supply food and oxygen to the body.
veins
blood
I Wish That I Had Duck Feet has 64 pages.
They circulate and oxygenate the blood.
ambot
Circulate blood.
YES
circulate
it needs to