Thou seest how sloth wastes the sluggish body, as water is corrupted unless it moves.

Sickness seizes the body from bad ventilation. [Lat.: Aere non certo corpora languor habet.]

Gutta cavat lapidem, non vi, sed saepe cadendo. - A drop of water hollows a stone, not by force, but by continuously dripping

The main thing was the lack of water. There was also a problem with oxygen, not critical but the body felt it was not enough.

My body is a pebble to them, they tend it as water tends to the pebbles it must run over, smoothing them gently.'

It's surprising how many things live in that body of water. You wish the highway wasn't there, but there's nothing you can do about that.