How do japanese people go to bed so late and wake up so early still for work?

I watch a few different YouTubers that interview regular working people in Japan (automotive workers, office workers, factory workers, video game designers, etc.), and across the board, they all go to bed crazy late, 12am-1am and some later, and still get up at 6am or earlier. Like, how in the world do they do this working a full time job? I work a full time job and I struggle getting up in the morning when going to bed at freaking 9pm.