Most of us do not literally "prostitute" our bodies but think about the fact that we do allow ourselves to be "used" by others many times at harmful expense to our bodies. Time and again I have been guilty of putting my body last on the list.
Sometimes God has to give a wake up call. I have had one and have been treating my body with dignity and am resolute to continue. I can't ever afford to get off track again and allow it to be used for anything other than the purposes of God.
"Therefore, I urge you, brothers, in view of God's mercy, to offer your bodies as living sacrifices, holy and pleasing to God—this is your spiritual[a] act of worship. Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is—his good, pleasing and perfect will." Romans 12:1,2 (NIV)
Recently while struggling with a physical condition I felt unworthy to even pray for a miracle, although I totally believe in the supernatural miracle working power of God. My feelings were due to guilt and shame from my disobedience in abusing my body and allowing it to get in bad condition. A friend reminded me that "His mercies are new every morning." I can boldly go before God's throne despite my mistakes, failures, and sins -- because His mercy has covered me. Thank God for grace.
An important point however is that just because I have received His grace, it is not a license to be disobedient. The same grace that extends forgiveness to us also gives power to walk it out everyday and live it.