This amazing energy cultivation practive explain in a movie.
The idea is that we can build up lots of anergy just by standing steel, but at the same time the awareness is growing too. This is a great practive because along with more energy help is to empty our mind and increice teh sense perceptions. You might notice the your breath is slowing down naturally.
There are 3 reservours of energy called Dantian. The lower dantian, located in the abdomen, stores vital essence (jing). The middle dantian, in the chest, stores life force energy (qi). The upper dantian, in the forehead, stores spiritual energy (shen).
When we have more energy we can create much more powerful state of being (reality).
If you practice this before meditation just for 30 min, you might notice the energy first in your hands like tingling sensetations of heat. Then during meditation you can feel very solid but light at the same time.