If there is an immediate exhaustion the patient feels, it may be the sign of the flu too. Feeling tired or overloaded is one of the initial phases associated with influenza. Flu and cold have a lot of symptoms in common. It’s just that flue is more serious than a typical cold. Exhaustion and feeling of being overloaded prevent patients from doing their daily duties like those associated with education or work. In this case, having a relaxation helps.