I don't know about your foot. It's okay to open your eyes for a second. You experienced a hypnic jerk, an involuntary twitch your brain sends as a reflex to make sure you're ready to fall asleep. They can come in handy if you're accidentally falling asleep in a tree or a bath tub or something. It's tough to pinpoint a cause as they can be random, but it was likely caused from a combination of the stress of taking the SAT and the irregular sleep schedule. |
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