What does a good health declaration mean?

Buying a Super top-up cover does away with the need to undergo any medical tests. Instead, you will be required to provide a declaration of good health. This includes acknowledging that you and your family members are not consumers of alcohol/tobacco/recreational drugs and are in good health (not having any pre-existing diseases or health conditions).

Here is the good health declaration: 
I hereby declare that all proposed members are in good health and entirely free from any mental or physical impairments or deformities, disease/condition. Neither any of the proposed members have been hospitalized for treatment of an illness or injury in past nor consulted any physician or conducted investigation for reasons other than common cough, cold or flu. None of the proposed member are habitual consumer of alcohol, tobacco, gutka or any recreational drugs.