When you meditate from head to toe, and toe to head in a particular sequential order, awakening sensations in every 2 inch strips (as Goenka Ji said) of the body, it will take time of many days and hours to awaken your inner body's, inner subconscious self and minds, hearts and depths (sensations are made of hearts, while breaths are made of awakening roots) to the fullest, knowing your actual self and thoughts, upto muladharas (inner guru) which guides the persons who have sanity, insightful wisdom, in the brain's intellects. Go beyond brain, to observe the swing of thoughts from positive slant to negative slant, staying and watching with a balanced beyond eye. Every thought should have hearts and depths and roots too (actions, action plans) and intellectual purity and wisdom in it. Then it is a perfectly sane brain. Then the personality and beauty, inner sparkle, or "tej" awakens, our face glows, the face and body glows as a whole. Inner chakras, manipura in stomach (digesting and after images affects) muladhar and legs too, finest feelings, nirvana and soul, all appear on the face, and all the insides express when you meditate, for the meditator has such a magical personality that draws the purest life and fate to itself. The person with love and good moods, beauty and feelings, true love, gets a great life, coming to himself/ herself. Thereby, the personality develops for a meditator. Secondly, the sane intellect gains a hearing power, that is best developed in meditation, wherein we hear not only the heights of heaven, the moderation of earth, but mainly the depths of our subconscious, SELF AND TRUTHS TOO. Eyes also (third eye) awakens when our ignorance sheds, and we introspect over our good deeds, purities, and love. Inner deeds, tendencies, all should be weighed. Every thought, every action should be corrected, purified, sanified, for our full eyes to open, ignorance shed, and all round hearing power developed. Thus our eyes remain healthy also always. Finally, when we observe the whole body and it's sensations, the body gains "bhanga", that is, it dissolves into fine wavelets, vibrations, electricity, etc. Even the breath becomes inner, softer, not physical. The body made of mud goes back to the mud again, but inner bodies thus made and developed remain. But to live onwards, and avoid supernatural swimming or sailing, to discover our complex ideas, we should get out of strange ideas or deeds and feelings. Also the body and souls unites, to form life. So we should be practical, seeing both together. This is yoga of practical spirituality. Dont forget the most important benefit of "samadhi". The perfect purest, blissful experience in meditation (and life perfect), after which we never fall to the ills of lower life, and unhealthy practices again. So get as many best experiences, feelings, sights. These good moments should be as many as possible, to tide us through bad times. Meditation makes our whole body focus on the bottom of the spine, from where heavenly vibes, divine arise, running throughout. Suppressed troubles of stormy breaths, and over-strong energy and praan, and agitated sensations (we may not notice consciously while rushing in the world) suddenly arise to the consciousness, causing sufferings to conscious lifes. Subconscious suppressions of negativities always tend to arise to raise their ugly head consciously. Inner pains and stormy breaths stopping, leading to quiet sensations, states our Vipassana meditation. Even cure the ideas, deeds, feelings, states and love for bad ills, so as to reach Vipassana states better. So Vipassana and meditation reduces the tension and agitations and sufferings in the subconscious body.
DHARMA-VIRTUE SAVES US FROM A FALL
When you are straight,not crooked not distracted or diffracted in yuur presence of mind,heart depth,soul or root,s and finer God's hearts all abiding in our chakras(circular presences in the central systems of nerves within the body and all parts of our self)you will not fall out of the chakra presences that are like armour protectionsin us,you will not fall out of your equanimity of mind,heart,etc. out into the worldly waters,rather storms,fires and such many dangers outside our circular field of the self,structure and ultimate truths of a permanent nature next to our self and true love-not far away9that is not out real true love or true self's identity).
So,have presennce of mind in the present-even deep and heart's rooted presences.Be straight in heart and depth and roots too.That is,by having straight love,true love,dharma and virtue which is the straight and normal way of actions and life.Good deedes is the straight path surrounding our immediate life and body like our aura that saves us always.So,never, never give your heart. It feels awful to miss your heart and depth and bliss.
Thus our nerves should be staight.Our nerves actually we create every moment and these structures and incarnations that we are made of inside we feel and endure.We will be straight best when we go beyond and observe our mind(and heart etc.everysubtle move within our depths and roots right down to our facial expressions and mannerisms in fineness of detail),ego selfishness and allin the mind obtaining full control over the madnesses of the mind,which does the main diffraction and distraction af the mind and all else. Evil and bad character emerge thus.Never think of others basically staying within the self feeling this strong pillar of solid strength when the self never reacts to anybody who may be evil to us.
Thus we shall not express ourselves instantly,unthinkingly.We meditate to express ourself centrally,totally.So.live inside the body and also,purify and clean our outer aspects too.Life is a union of both body and soul9including mind heaht).To be eternal both should be pure and love too.