Show motion mot skill gymnastic exercise call combination muscle need useful children strength alone attain success skill exert body mind often too light light sight mental element certain athletic game measure furnish exercise body alone whole every part being mind social nature moral nature play play pixy element lion professor EL richards popular science august effect exercise hind hind mind nut doe effect exercise end simply nd mind too share place brain nervous system blood waste itself great gain voluntary muscle term necessary forth mind body works true require skill mind object gain skill body mental element come child life instance walk swim write childhood mind being game require moral |