Sri Aurobindo
Letters of Sri Aurobindo
5. Planes and Parts of the Being
No, a weak vital has not the strength to turn spiritually – and being weak, more easily falls under a wrong influence and even when it wants, finds it difficult to accept anything beyond its own habitual nature. The strong vital, when the will is there, can do it much more easily – its one central difficulty is the pride of the ego and the attraction of its powers.
The chest has more connection with the psychic than the vital. A strong vital may have a good physique, but as often it has not – it draws too much on the physical, eats it up as it were.