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by oftenwrong 2898 days ago
Like the other user said, it is jarring. Observe a person in deep sleep waking up to an alarm. They will have a brief moment of panic as they are abruptly jolted out of sleep. An alarm that gradually increases in volume is better, but still aggravating. A light-based alarm is significantly better. The best, by far, is allowing oneself the time to wake up naturally, when the body is ready, with no artificial sleep interruption.
1 comments

I guess it varies by person. I don't find alarms jarring or panic inducing.