Your body floods that area with blood to try and return it to body temperature and in the process your blood vessels expand, which causes that throbbing pain.
He linked the past with the present, and the eternity behind him throbbed through him in a mighty rhythm to which he swayed as the tides and seasons swayed.
" Pass me a bowl, " said Hermione, holding the pulsating pod at arm's length; Harry handed one over and she dropped the pod into it with a look of disgust on her face.
Again, again–and it was not the ear that heard the pulsing rhythm, it was the midriff; the wail and clang of those recurring harmonies haunted, not the mind, but the yearning bowels of compassion.
The total volume may be closer to 110 ml, and 70ml is the fraction that got ejected out with each beat, the other 40ml kind of lingers in the left ventricle until the next beat, right?