Please choose the correct ending to complete the given sentence: Health: [header] How to know the difference between sleepiness and fatigue [title] Notice when you doze off. [step] Your eyelids might get heavy during the day from a boring class or meeting or after a heavy lunch. Keep track of when you feel like dozing off.

Ending1: Because it is the proper bedtime for adults, much like sleep, if you're staying up all night and notice a difference in your sleep, then it might be time to try with sleep. [substeps] If you happen to be waking up every 20 minutes during the day, it's time to begin taking your sunglasses off and trying to fall back asleep. Ending2: [title] Determine if you sleep earlier when you fall asleep. [step] If you go to bed and wake up the following morning in the middle of the night, then your mind may be switching between the child and adults. Ending3: If you've been tossing and turning between the two, this will alert you to wakefulness. [substeps] If you've had night restful sleep, it might be time to replace your uncomfortable bedhead. Ending4: This can clue you into if you're simply sleepy or sleep deficient. Common times people get sleepy include : [substeps] Sitting down in your office, classroom, or a meeting reading watching tv or a movie riding in a car for an hour without stopping waiting in traffic for a few minutes [title] Check for physical symptoms.

Answer format: ending1/ending2/ending3/ending4