>Okay, so that means that no matter how stressed we get, there’s a cap to the energy we can use. But how is that relevant, since it also applies to exercise or other energy utilization by the body? Why does a limited capacity to consume energy only apply to stress?
It doesn't. That limited capacity to consume energy applies to exercise, brain activity, thermogenesis, digestion, and every other biological process as well. It is a fundamental aspect of cellular biology and a major focus in the field of exercise physiology.
Fitness training is the very slow and deliberate process of pushing these limits tiny percentages higher.
I suggest you build some practical and theoretical knowledge of the field before dismissing the paper.
I absolutely don't doubt you but can you provide some accessible education resources or some sports science/biochemistry papers for the claim around "That limited capacity to consume energy applies to exercise, brain activity, thermogenesis, digestion, and every other biological process as well. It is a fundamental aspect of cellular biology and a major focus in the field of exercise physiology." ?
What energy are we talking about here exactly? ATP?
Yes. Metabolism is rate limited by countless chemical reactions. Energy sources need to be broken down and moved around the body. Waste products need to be removed. Mitochondria only work at a certain rate. You can increase the number of mitochondria but that hits a practical ceiling as well.
You can start with the Wikipedia article for Metabolism or search for "metabolic scope" and "metabolic efficiency".
It doesn't. That limited capacity to consume energy applies to exercise, brain activity, thermogenesis, digestion, and every other biological process as well. It is a fundamental aspect of cellular biology and a major focus in the field of exercise physiology.
Fitness training is the very slow and deliberate process of pushing these limits tiny percentages higher.
I suggest you build some practical and theoretical knowledge of the field before dismissing the paper.