What is the Origin of Late Afternoon Training?

This concept is a direct practical application of chronophysiology, the study of how human physiological variables fluctuate over the 24-hour circadian cycle. Scientific research consistently demonstrates that core body temperature, muscle strength, and flexibility tend to reach their maximum diurnal peaks in the late afternoon. This observation led to the specific recommendation of this window for performance-critical, strenuous exercise sessions.

What is the Mechanism of Late Afternoon Training?

The performance enhancement observed in the late afternoon is mechanistically linked to the peak in core body temperature, which increases muscle elasticity and enzyme activity, thereby reducing the risk of musculoskeletal injury. Furthermore, lung function and anaerobic capacity are typically at their diurnal maximum, improving oxygen delivery and utilization. Crucially, the ratio of the anabolic hormone testosterone to the catabolic hormone cortisol is often favorable during this window, supporting protein synthesis and post-exercise muscle adaptation.

Late Afternoon Training ∞ Area

Late Afternoon Training

Meaning

Late afternoon training refers to the practice of scheduling physical exercise, particularly resistance or high-intensity interval training, during the time window typically spanning from 4:00 PM to 6:00 PM. This specific timing is often considered physiologically advantageous because it capitalizes on the natural diurnal peaks in certain performance-related physiological parameters. Leveraging this time slot can lead to superior strength gains, power output, and training adaptations compared to earlier parts of the day.