> Examined closely enough, optimism, confidence, and happiness are naught but delusion themselves. I agree completely. The base human emotions are all prone to

> Examined closely enough, optimism, confidence, and happiness are naught but delusion themselves. I agree completely. The base human emotions are all prone to delusion, but have substantial effects on the human body. "Unjustified" confidence and optimism can still have a great impact on physiological health. However, "perceived physical activity" is such a hyper-specific and abstract thought, that it doesn't engage our reptilian brain the same way something like "confidence" would. Hence why I find the study's conclusion pretty surprising.