In my personal view the health can be defined in such a way that "we can live, achieve, work peacefully and live long life only because of good health".
Step-by-step explanation:
To explain health in terms of the theme "residing within the body",
- it points about the mental health and physical health
 - the outer cleaning is equally important to clean the inner organs by drinking plenty of water, and eating nutritious food.
 - It is necessary to have work-life balance. We should never curse our body with too much of stress, work-load, etc.
 
Eastern and western culture:
Western: 
- Divides the "health from the disease"
 - Change the environment
 
Eastern:
- Health as balanced state and disease means imbalanced state
 - Adapt to the environment