SubHealth condition is defined by the World Health Organization as a state between health and disease when all necessary physical and chemical indexes are tested negative by medical equipments, things seem normal but the person experiences all kind of discomfiture and even pain.
Most of us have the experience of driving into a repair shop and tell the mechanic that your car acts strange and some parts do not work. After checking over, you are told that they can not find any thing wrong, and you can come back when something happens. You left and you begin to worry that something is going to happen to the car, but you do not know when and where!
It is the same thing to your health. Should you congratulate yourself and forget about it when your doctor tells you that they have found nothing wrong ? Perhaps not.