I do this too, it happens mostly if I went to bed extremely tired or had a drink or two the night before. What works for me is an alarm clock app that forces me

I do this too, it happens mostly if I went to bed extremely tired or had a drink or two the night before. What works for me is an alarm clock app that forces me to do some moderate math problems before it turns off. I set it to 5 problems of the type "32*5+84". I can't claim it's 100% successful, I've been known to do the math and go back to sleep. But when that happens I always remember it, so at that point it's more of a laziness problem :D