Sublime

My forehead starts to pulse, really pulse, like my heartbeat begins in the head.

palpitating,

When you first relax your abdomen you may be more acutely conscious of its pulsation than when you were tensely controlling it. Understand that this pulsation is no more than the action of the main artery in your body, the aorta, in its effort to pump blood into your legs.

a pulse just slightly faster than a typical human heartbeat.

In other words, the nature of the flow makes a transition from being pulsatile in the larger vessels to being steady in the smaller ones. That’s why you feel a pulse only in your main arteries—there’s almost no vestige of it in your smaller vessels. In the language of electrical transmission, the nature of the blood flow changes from being AC to DC

alternation between tension and relaxation is the pulse of living,

undulations,