There are various energy channels in the body including two main ones: one that runs in the front of the torso and another in the back of the torso.

These two channels automatically connect each day following a regular cycle (11-1 at noon and 11-1 at midnight).

Practicing Qigong can help these channels connect any time during the day.

All of the other body's energy channels run through these channels making them vital for health and well-being. When the channels are connected, energy flows more freely.

The Spring Forest Qigong Personal Learning Course gets into this in more detail (and with elegance).

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The body has two forms of energy: Yin and Yang. Problems occur when they are out of balance. Qigong helps to bring these energies into balance.

I forget which is which--and I am at home so I cannot look it up--but boiled water is one form and spring water is the other form. Drinking this highly balanced water helps balance the energies in your body.