Our bodies are to be living sacrifices. God wants us to offer ourselves daily, laying aside our own desires to follow Him. Putting all our energies into service to Him and others. Trusting Him to guide us in every area of our lives. God is particularly interested in our insides, our heart, our thoughts, our attitudes, our values. These are the things God wants to transform to His leading through our learning His Word and keeping His commands.
Romans 12 So brothers and sisters, since God has shown us great mercy, I beg you to offer your lives as a living sacrifice to him. Your offering must be only for God and pleasing to him, which is the spiritual way for you to worship