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

Is anyone having trouble sleeping at night and feeling groggy during the day lately? If you do not feel refreshed even after sleeping in and keep feeling lethargic, it might not be simple fatigue. Could your body rhythm be faltering because of the season?

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.