Not everyone is capable or willing to explore the hidden teachings of the arcane arts. Internal power cannot be mastered by the lazy or the inattentive.
Friday
These are the 6 balanced pairs:
Hands & feet
Elbows & knees
Hips & shoulders
Back of head & coccyx
CV1 & crown
Buttocks & armpits
They are sometimes referred to as the '6 harmonies'.