Here is an excerpt from my book, The Silent Master: Awakening the Power Within:
Appreciation is the first step. What if you could only use certain parts of your body? Have you ever thought of what you would do if you had only one arm? Or no arms? Or no sight? Most people who enter my martial arts school are physically healthy and take their bodies for granted. It’s for this reason I sometimes have my students try to do what they think are normal everyday things without the use of their legs or arms or eyes. Very quickly they learn how complex the movements of their hand can be, or how precious their sight is. This physical body is a miraculous gift. Utilize it, care for it, strengthen it. Don’t waste it or take it for granted.