Turns out that Phidippides, the Greek guy who died in 470BC after running 175 miles in two day, was trying to tell us something,
Excess exercise ‘hurts the heart’ and cause dangerous long-term harm, say scientists
Activities such as marathons, iron man distance triathlons, and very long distance bicycle races may cause structural changes to the heart and large arteries, leading to lasting injury.
Some people may overexercise since they enjoy the endorphins; psychology has named that the Jim Fixx syndrome
Some joggers, in order to heighten the pleasurable effect of the jogger’s euphoria, subject their bodies to excessive exercise. In this pursuit of pleasure, they may sometimes land themselves into serious trouble that has been described as the Jim Fixx Syndrome.
Fixx also dropped dead during jogging.
Now excuse me while I take a nap.