If you're more active at night and sleepy during the day, you might have a circadian rhythm disorder —your body's internal clock is set to a different time zone. Factors like irregular sleep habits, prolonged exposure to screens before bed, or working night shifts can throw off your natural sleep-wake cycle. Realigning your schedule and sleep hygiene practices can help, but if you feel like you're living in a different time zone, visiting a sleep specialist might be in order.