When awake the brain constantly uses the resonators in the resonator chains for recognizing objects and motoric reactions. This requires energy which changes the electrolytic environment around the resonator chains from which the energy is extracted.

The change of the electrolytic environment causes a change in the resonance frequency of the oscillators, making recognition more and more 'blurred'. The same is true for the motoric resonator chains that have to react on recognition. The best way to imagine this is that the oscillators get restricted in their movement by an initial tension.

It is not possible to readjust the electrolytic balance when the brain is awake, because the adjustment itself would induce oscillations when the oscillators return from a 'tension' state into their 'relaxed' state. This would seriously interfere with current recognition and actions which might be necessary for survival in a critical situation, because it produces the same unpredictable events as experienced in dreaming

Therefore the brain needs a quiet perid - sleep - in which it can readjust the electrolytical balance.