human
I've been feeling very tired lately. Is this normal?
assistant
Yes, it is common to feel tired during the winter season due to seasonal changes in weather and daylight hours. However, if you are feeling unusually tired or fatigued for an extended period of time, it may be a sign of underlying health issues such as anemia, hypothyroidism, depression, chronic fatigue syndrome, or sleep apnea. It is important to consult your doctor if these symptoms persist or worsen.