I am pretty sure that Mr Bennett is speaking of energy for the spiritual quest. It (energy) is generated first by the body through food intake and digestion, then refined by breath and then by conscious perception, service and sacrifice. Energy needs to be first generated and then refined and accumulated in order to pursue a spiritual aim.
Yes, most people focus on energy of the body. However it is commonly leaked out in wasteful pursuits and activities rather than refining and accumulating it for the journey of the soul. But it all begins with the body either way.
Although I honestly have no idea if what is truth or not, I tend to believe the exact opposite. The soul, if it exists and forms our spiritual energy, it existed before our body comes into life and will exist after our body is no longer around. But who knows anyway.
Have you found anything in yourself that will survive death? We must create something that can survive death for our onward spiritual journey (back to Source). And, like you, I do not know - but that is my working hypothesis :-)
agreed with you @onceuponatime :)