I do this - I set 5 different alarms, each spaced 2-3 mins apart. If I'm going to bed and need to get up after only 3-4 hours sleep, I will do the same, but al

I do this - I set 5 different alarms, each spaced 2-3 mins apart. If I'm going to bed and need to get up after only 3-4 hours sleep, I will do the same, but also set one 10 mins later, 20 mins later