Health is a state of being well enough to function well physically, mentally and socially.
Disease is a state of discomfort due to any particular cause.
It is possible to be in poor health without actually suffering from any disease.
(i) Good health for a dancer may mean being able to stretch his body into graceful position.
(ii) Good health for a musician may mean having enough breathing capacity in his/ her lungs to control the notes from his/her flute.