Keep the resistance to energy down by keeping it well-oiled. Resisting energy, bad. Let's look at just one level first. On the scale of physical anatomy the same is true. A simple example of the flow of energy in our bodies is the circulation of blood.
Blood carries energy to all the cells in the form of nutrients and oxygen.
And in the most simplistic sense, that's the flow of energy we most easily see in our body's world. Block that flow and you got problems. Advice on how to live, eat and act to keep healthy and not block up our arteries. But the physical is just the end-result level where the blocking of energy shows up. Take a tip from my favorite metaphysician, Michael Jordan.