In the same way, in physical function there is eating and drinking, and excrementation, on the lower plane and respiration and heartbeat on the upper plane.
Now the equilibrium to be established is fourfold.

There must be a true equilibrium between what we eat and what we reject again by excretion: likewise between the systole and diastole of the heart, the inspiration and expiration of our breathing.

Suffice to say the equilibrium is never quite perfect.

Most people are either too fat or too thin, too hot or too cold, too slow or too quick.

There is no such thing as an _actual_ norm, a living norm.