Nearly 3,000 years ago the psalmist, David, wrote, "I praise Thee because I have been fearfully and wonderfully made; marvelous is Thy workmanship as my soul is well aware" (Psalm 139:14).  But just how wonderfully made man really is has come to light only in the past century as science has began to unlock the secrets of the human body.  The human body, according to medical science, contains 37 trillion cells that reproduce themselves every seven years.  Each one of the 37 trillion cells performs 10,000 different chemical functions, according to the late Dr. Ralph Byron of the City of Hope Cancer Clinic, yet all of them just work together to produce a healthy body.