Some of the more interesting quotes from the article:

"We're at a point where the level of evidence is really indisputable and withholding exercise from patients is probably harmful.

"If we could turn the benefits of exercise into a pill it would be demanded by patients, prescribed by every cancer specialist and subsidised by government.

"It would be seen as a major breakthrough in cancer treatment."

and

"The notion that we must protect a patient, wrap them in cotton wool, is old fashioned and not supported by the research.

"Our attitudes to treating cancer ... have to change. All cancer patients will benefit from an exercise prescription."