There is an expression “looking with a thousand eyes” – you are all eyes. You can feel without the skin. That is why people without limbs can still feel sensations in their missing limb. You can smell without the nose and taste without the tongue. When someone says something, you are "all ears" - you are listening with every cell of your body.
The five senses and the ability to think are all present in consciousness. So each cell of the body has the potential to perform all the functions of the senses. All cells are made of the same tissue each DNA molecule contains all functions of the body. Consciousness is inherent in all cells and every sensory stimulus brings knowledge, which is the nature of consciousness.
Some people who have lost one of their senses find that the others become heightened. You do not have to lose one to sharpen the others. You can sharpen all of them in deep silence. A single cell becomes the whole body. Somewhere it becomes fingertips, somewhere it becomes the nose and tongue, but everything is a manifestation of a single cell. In the same way, the entire universe is made up of a single substance.
Feeling that everything is made up of one thing heals the body and mind and balances the three doshas in the body - vata, pitta and kapha. This is savitarka samadhi, which means equanimity with logical awareness.
Awareness during deep sleep is jada samadhi - equanimity with inertia. Hence sleep is the main factor in healing. Medicines will not help without sleep and rest. Samadhi with ecstasy has no logic. This is nirvitarka samadhi, equanimity with bliss. Nirvitarka samadhi is even beyond the experience of bliss, indefinable beyond words.
