We know from physics that energy cannot be created or destroyed. So if we are increasing our life energy, where is is coming from? And if we are decreasing our life energy, where is it going?
Good questions! http://www.latimes.com/news/science/...,6326048.story
I'm not saying this is an example of "life energy," but its elusive nature points to a potential similarity in nature. There is much theorizing on dark/invisible "things."
Coincidentally I heard on NPR the other day that the term "God Particle" was the product of a publisher not liking the more matter-of-fact title chosen by the author.