Heart Engine - Cardiovascular System : - A well-tuned engine - healthy heart pumps fuel (blood) efficiently, providing energy to the entire vehicle (body).- Good engine performance of heart - cardiovascular health enables the vehicle to accelerate, climb hills, and maintain speed. Lungs - Air Filter (Respiratory System)- A clean air filter (healthy respiratory system)… Continue reading How to improve the working capacity of our Heart and lungs – two of the vital engines?