1. Stop exercise when you feel: nausea, dizziness, chest pain, persistent joint and muscle pain, excessive strain, and abnormal breathlessness.

2. Protect the normal curvature of the back while performing any type of exercise, especially those with weights.

3. Don't hold breath when lifting weights. Breathe out on muscular exertion and breathe in during recovery.

4. Drink water and other fluids to replace fluid lost through prolonged exercise in hot weather.

5. You should seek doctor's advice before engaging in vigorous exercise if you have 'hypokinetic diseases,' such as coronary heart disease, high blood pressure, and diabetes.