In Have a Nice Day, episode 127, the hosts discuss doing different things at a suitable time. They use differences in people and routines as a prompt for thinking about everyday life, not as a biological finding or expert sleep advice.
Apply the idea without overgeneralizing
Notice when you tend to focus, which tasks take the most energy, and when you need rest. Arrange your schedule around real constraints such as work hours and family responsibilities. Use observations from your own life rather than treating a personality type or the program’s “body clock” idea as a permanent label.
This is a discussion of daily routines, not a sleep assessment or an individualized schedule.