waste matter

Every time you move a muscle, you fill the cells of that muscle with a certain amount of waste matter.

As in an ordinary fire, ashes are produced in the form of waste matter of a poisonous nature.

Unless the blood is kept moving, this waste matter will tend to collect somewhere or other and give rise to trouble.

This acute fatigue is due to the stirring up of the waste matter in the system.

The result is that a certain amount of this waste matter is kept back, and the health suffers in consequence sooner or later.