Paul wrote, “I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship” (Rom. 12:1-2). The word “present” refers to the offering of a sacrifice. “Do not present your members to sin as instruments for unrighteousness, but present yourselves to God (Rom. 6:13).” To present our bodies is to present ourselves as a sacrifice. It is to present the whole person to God (Phil. 1:20). Paul is not talking about offering only our hands or our arms to God. God does not want only a “part” of our selves. God wants our whole being, our mind, heart, and soul.
Once upon a time there was a chicken and a pig who were very good friends. They lived in a town that had a great deal of poverty. Many residents rarely ate three meals a day.
The chicken wanted to help these people, so one day she approached her good friend the pig and said, “I have an idea how you and I could help these poor people get a great breakfast.”
“What could we do?” questioned the pig.
“Well, I could give the eggs I lay and you could give your ham so that we could give the people a great ham and eggs breakfast,” the chicken explained.
“I understand your concern,” answered the wise pig, “but what is just a donation for you is a total commitment for me!” 
To offer yourself is to give your all to Jesus.
Paul uses the verb complement “to present” as an infinitive. An infinitive indicates purpose. Paul is urging us to be intentional about it. Make it a point to present yourself to God.
 Motivational Joe, “Chicken And The Pig Story (A Tale Of Commitment). Cited September 11, 2016. Online: http://www.motivationaljoe.com/chicken-and-the-pig-story/.