"keep on working" is translated as "keep living healthy", but I think it just means "keep on working(for a job or task", right?
rp94)The human body is an extraordinary machine but many people do not value it highly enough...In order to keep on working well for a longer time, the body demands a certain kind of diet. The ideal diet consists of a wide variety of fresh vegetables, vegetable protein...
No. "For your body to keep on working" means "In order for your body to continue functioning as a body" or "To stay healthy and (preferably) alive!" For it to keep working well, it specifically needs a good healthy varied diet. It doesn't matter whether there is a job or a task involved. If your body isn't working properly, then you are not healthy in some way.
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