Fourth: Adopt an outward posture that reflects your inner reverence, devotion and submission for the words of your Lord.
The Qur'an tells about such postures in many places: true believers 'fall down upon their faces', they 'prostrate themselves', they 'fall silent and listen when they read the Qur'an, their skins shiver and soften'. The obligation to prostrate oneself (sujud) on reading certain verses of the Qur'an is a sure indication of how your bodily postures should reflect what you are reading.
Why are postures of body important? The 'outward' makes a tremendous impact upon the 'inward' of a man. The 'presence' of the body helps keep the 'heart' present. There ought to be a vast difference in your physical attitude while reading the Qur'an in comparison with an ordinary book. Hence many rules of etiquette and manner have been suggested.
You should, says al-Ghazali, have wudu be soft-spoken and quiet, face the Qiblah, keep your head lowered, not sit in a haughty manner, but sit as you would before your Master. Al-Nawawi, in his Kitab al-Adhkar, adds some more: the mouth should be cleaned thoroughly, the place should be clean, the face should be oriented towards the Qiblah, the body should exhibit humility.