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In page Terry Fox:

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The physical demands of running a marathon every day took their toll on Fox's body. Apart from the rest days in Montreal taken at the request of the Cancer Society, he refused to take a day off, even on his 22nd birthday.[19] He frequently suffered shin splints and an inflamed knee. He developed cysts on his stump and experienced dizzy spells.[20] At one point, he suffered a soreness in his ankle that would not go away. Although he feared he had developed a stress fracture, he ran for three more days before seeking medical attention, and was then relieved to learn it was tendonitis and could be treated with painkillers.[21] Fox rejected calls for him to seek regular medical checkups,[22] and dismissed suggestions he was risking his future health.[18]