Figure 3 — Activity group vs. average sleep duration (line)
Avg. sleep duration
Low: 8.43 hrs, Moderate: 6.57 hrs, Active: 7.21 hrs, Very Active: 7.45 hrs.
Figure 3. Trend in average sleep duration across increasing physical activity groups. The most dramatic decline occurs between the low-activity and moderate-activity cohorts — a drop of nearly two hours — consistent with the time-displacement hypothesis: as exercise commitment grows, sleep is the first resource sacrificed from the daily schedule.
Source: Preventive Medicine and Lifestyle Reports, Autumn 2023, pp. 88–102. [fabricated for educational purposes]
Activity GroupAvg Sleep Duration
Low (<40 min/day)8.43 hrs
Moderate (40–59 min/day)6.57 hrs
Active (60–74 min/day)7.21 hrs
Very Active (75+ min/day)7.45 hrs