I suspect this is almost always not a great solution to this problem. When I was a young adult I used aggressive alarm measures to get out of bed on time, such as having a very loud alarm clock on the far end of the room, where I had to actually get out of bed to silence it.
I discovered realized needing to do this was caused by a number of fixable health/lifestyle issues: going to bed too late, not getting enough daylight and exercise to sync my circadian rhythm correctly, too much screen time and bright lights before bed, too much coffee late in the day, etc. Nowadays I go to bed by ~8pm everyday, fall asleep quickly, and am up early. I haven't needed an alarm even for important very early events in almost a decade.