So I have been looking around throughout the physics forum and other sources and still can't seem to find a good general explanation of how Life, and energy are related. First let me propose some definitions to help further our discussion and clarify what i mean. Life, in the way it concerns us here would be the chemical processes that culminate together to form a living, functioning organism. Energy is energy. We know there are different forms and it can't be created or destroyed. Without energy, life cannot sustain and will eventually become death or the absence of life. Question 1. Is it possible to measure or estimate the Net energy it takes to sustain an organism? the answer to this question I believe lies within the realm of Metabolism. Life has been around for billions of years according to our understanding of the fossil records and our understanding of chemical dating. There had to be an origin of life at sometime and I am trying to understand how the energy from the sun gave rise to complex life. I think the The Miller–Urey experiment tries to get to this answer. This experiment was done in 1952! Question 2. So what do we know now, after nearly 64 years of scientific progress? After the origin of life, it slowly evolved into what we have today, highly organized systems. Transferring of one form of energy into another, and eventually creating another life form that continues the process. I feel that the answer to this question will help us begin to answer my next question. Now bear with me it is a little on the metaphysical side and I am sure many people would believe a lot of explanations to be bogus. The ancient eastern spiritual practices often mention something called chakra and Prana. Prana being the general life energy of the entire organism. This i think may be the Net energy I was talking about earlier. chakra being a particular form of energy at a specific point in the body. Would modern chemistry and physics be able to explain these ideas in real physical and concrete language? I have only taken general college physics, chemistry and biology courses. So when we get down to specifics, this is where my knowledge thins. But here is what i am familiar with..... Electrical currents create magnetic currents ( correct me if i am wrong) Our cells communicate with each other through electrical and chemical processes. It could be argued then that we ourselves create a magnetic field based on our cellular processes. Question 3 Can we measure this? Have we? Can we control or alter this prana and or chakra, whether it be with our consciousness or with drugs? Chakra points being in places like you heart or brain. I hope these questions and background can prompt discussion on how we can go about understanding the relationship between life and energy. I would really like to keep this discussion more scientifically based than opinion based so please, if you find any discrepancies in my background let me know so we can overcome any confusion .