Engaging the mind, body and senses in sadhana-bhakti is meant to awaken our attachment to the Lord, by which we can fully transcend the material body and gradually awaken pure love of God. Such pure love goes completely beyond the physical body when it reaches the stages of bhava-bhakti and prema-bhakti.
Lectures from a Disciple, Vol. 2, "The Process for Awakening Bhakti"