Tina Lee Tin-yu, 16, Kowloon True Light School: Choosing the stage name “Egg” holds a special appeal for me. Not only is egg my favourite food, but it also symbolises a delightful culinary ...

important-sounding name to use in place of "light." A chart on the same page lays it out: non-REM stages 1 and 2 fall under the Apple category of “core” sleep, while stage 3 is “deep” sleep.