Maybe I’m naïve but I read it as “going to bed early relative to when you normally go to bed”. For example, if I normally sleep at 9:00pm, then being in bed at 8:30pm so that I actually get all the sleep that I’m supposed to; instead of going to bed at 9:30pm and missing out on a whole hour’s sleep (assuming it takes 30 minutes to nod off).
Maybe I’m naïve but I read it as “going to bed early relative to when you normally go to bed”. For example, if I normally sleep at 9:00pm, then being in bed at 8:30pm so that I actually get all the sleep that I’m supposed to; instead of going to bed at 9:30pm and missing out on a whole hour’s sleep (assuming it takes 30 minutes to nod off).