In physics exertion is use of energy against, or for, inertia as described by Isaac Newton's third law of motion.
Chronic fatigue syndrome, an illness of unknown cause comprising post-exertional malaise, unrefreshing sleep, widespread muscle and joint pain, sore throat, cognitive difficulties, and chronic, often severe, mental and physical exhaustion, for a minimum of six months, not due to ongoing exertion, not substantially relieved by rest, and not due to any other medical condition
"Alas, Mdlle. Falcon!" cried Jules Janin; "this young creature, of such great hopes, sang without voice, without expression, without exertion, without energy, without point."
He found out that tension and exertion was always accompanied by a shortening of the muscular fibres, that the reduction of the muscular tonus decreased the activity of the central nervous system, that relaxation was the contrary of states of excitement and well suited for a general remedy and prophylaxis against psychosomatic disorders.
Others dissent by historical evidence that points in the opposing direction claiming the impermanence of the systems brought on by dictators like Joseph Stalin, Adolf Hitler and Mao Zedong which are remembered in having fared more by despotism than government system and thereby typifying the exertion of "rule of man" within their reigns.
" "White Man/Black Man" is another winner." John Mendelsohn in Rolling Stone was equivocal stating "By no exertion of the imagination are James Gang the greatest rock and roll band ever to walk the face of the earth or anything... but they are capable of some nice little treats every now and again."
Menzhinsky spent his last years as an invalid, suffering from acute angina since the late twenties, which rendered him incapable of physical exertion.