Wake Up Light Up

I wake up, either to alarm or naturally (I'll sleep a random 4-8 hours and just blink be awake), turn off White Noise, play podcasts or music, read messages, usually play Animal Crossing or a gachapon game for a few minutes, then get up.

Before social media, say from 1999 to 2010, I had a Sharper Image white noise generator/travel alarm, and a GameBoy Color or DS.

Before that, all the way back to the '80s, I had my stereo playing softly, would crank it up and read or play Game & Watch type games. I can't remember what I did as a kid, I think I didn't sleep much.

How is it possible to sleep or wake up without electronics? Wouldn't the silence/incidental noises wake you up? Wouldn't the lack of stimulation make you fall back asleep?