Cleaning the blood

"I can offer you my nerves,
from where you can travel
any place inside me
from heart to brain
from muscles to bones.
You can travel freely
roam anyway you like.
I will make you my blood
to make sure
Vitamin K is efficient
preventing your leakage
from cuts, bruises and wounds
thus clotting the blood.
And most of all,
I shall drink water
to clean the rest of addiction
to make you as the sole addiction
so that
even the veins can carry pure blood
challenging the science.
Will you clean my blood
to stay in it.
Be sure! you don't need
any magic wand or groomstick?"
This was how the hermit proposed 
his lady
with a question.