Always tired?

Chloe
Every day after school I am always super tired. I will eat a small snack and then go lay in bed and watch Netflix or YouTube. Out of no where I will wake up and see I have slept though two 45 minute episodes of my show. Why is this happening? I am still falling asleep at night around 10:30-11:00 so I'm getting enough sleep. Anyone have suggestions? I got blood work done earlier this month and they said all was good.