Opening the Donguibogam library...
Opening the Donguibogam library...
Opening the symptom encyclopedia...

Do you toss and turn every night unable to fall asleep, eventually picking up your smartphone? No matter how tired you are, does sleep fail to come, leaving you awake until dawn? All of this may not simply be because you are tired; it could be a sign that your body's essential biological rhythm is disrupted.

Does your body feel heavy as lead even in the bright morning sunlight, while you lie wide awake late into the night? Could shift work or frequent travel have drawn you into a life without day or night? This may be a warning sign that your body's most fundamental rhythm is breaking down.