I'll go into a little more detail about the meridian (blood vessel) channels. here's one example: The conception vessel meridian channel runs from the lower extrimities of the body up the front in a straight line to your bottom lip and the governing vessel meridian channel starts at the very end of your tailbone and travels up your back, over your head to the inside of your mouth. this you are probably aware of if ever having studied pressure point manipulation. anyway, with correct posture and stance, these meridians specifically should form a straight line, thus delivering maximum blood and oxygen flow. hence the term I used as meridian alignment. hope this clarifies.