Have you ever woken up with a sudden jolt just as you’ve started falling asleep? Or maybe it felt like you were falling?
It could be that it felt like you were having a huge muscle spasm. You may have even felt a small shock sensation or a bouncing feeling.
Perhaps it was even your partner that was experiencing it, and this in itself startled you back to consciousness. It could be then (though not necessarily) that you experienced a hypnic jerk. And if so, you’re certainly not alone.