Clarity

Mental clarity is essential for cultivating longevity, for without it the adept cannot muster the discipline and understanding required to sustain good health.

Clarity improves sensory perception as well as mental conception based upon perception.

Clarity prevents the adept from being fooled by the Five Thieves and promotes the mental equanimity required to cultivate emotional equilibrium.

Clarity also permits the adept to distinguish the true from the false, keep the head in command of the heart, regulate the Fire of emotion with the Water of wisdom, and stick to the Great Highway of Tao rather than getting distracted by life's byways.

Exercise and breathing