About the adage, "Spare the routine, spoil the engine."?

Question

Could it be used to advise one to take good "routine" care of his own health so that when he should face a difficult situation in health, he has what it takes or more chances to get over it?

Answer 1

Perfectly correct.

Regular maintenance of an engine prevents surprises on the road. We should take good care of our health in pretty much the same way.

Great fit.

Answer 2

My nan always said she would rather wear out than rust out. Yes, I think you could use it for anything which would deteriorate if it did not get used.