Answer:
it is for normal growth and development
From what I know there could be a few reasons.
1. Maintenance
2. Training for the use of an AED
3. Cost
1.could be guilt
2. they are not social
3. shy
Risk Factors You CAN'T Control
Age: As you age, your risk for heart disease increases. About 82% of people who die of coronary heart disease are 65 or older.1
Gender: Heart disease kills more women than men, although men have higher rates of being diagnosed with heart disease.2, 3
Heredity (Including Race): A family history of heart disease increases your risk. Certain racial minorities (including African Americans and Hispanic Americans) have higher rates of heart disease risk factors such as hypertension, obesity and diabetes.