Turn to Romans 12:1 “I beseech you
therefore, brethren, by the mercies of God, that you present your bodies a
living sacrifice, holy, acceptable to God, which is your reasonable
service.”  
It is the inward man, not the outward man that becomes a new creature in Christ. We still have the same
body we had before we became a new creature. What we must learn to do is to let
that new man on the inside of us dominate. With that new man, we control the
flesh and do something with our bodies.