Fig. 1: Theoretical model.
Survey periods: Day 0 (18:00–24:00 after work on the survey day); Day 1 (06:00–10:00 before work on the next day).
Fig. 1: Theoretical model. | Humanities and Social Sciences Communications
Survey periods: Day 0 (18:00–24:00 after work on the survey day); Day 1 (06:00–10:00 before work on the next day).
