Late-Night Exercise May Negatively Impact Sleep Quality, Recent Research Reveals
Emerging scientific data suggests that engaging in vigorous physical activity during evening hours could interfere with natural sleep patterns. A 2025 study published in the Journal of Sleep Medicine indicates that workouts conducted within three hours of bedtime may delay sleep onset and reduce sleep efficiency by up to 30%. The research highlights how elevated core body temperature and heightened sympathetic nervous system activity from evening exercise can disrupt circadian rhythms. For optimal sleep hygiene, experts now recommend completing intense workouts at least four hours before bedtime, with gentle yoga or stretching being the only recommended activities in the late evening window.