Research
Hormonal
High-intensity physical activity, particularly when performed in the evening or close to bedtime, is associated with poor sleep quality and difficulty initiating sleep.
If you exercise in the evening, avoid high-intensity workouts within 3 hours of bedtime. Opt for moderate intensity or finish your session earlier in the evening. High-intensity or long-duration (>90 min) evening exercise is linked to poorer sleep quality.
GoodRefutesHIGH confidence
high-intensity physical activities were mainly found to lead to poor sleep quality... Nighttime physical exercise, especially high-intensity interval training, could affect sleep quality if performed less than an hour before bedtime [48].
Why this rating
Supported by multiple cross-sectional and longitudinal studies cited in the review.
Source
The Effect of Physical Activity on Sleep Quality and Sleep Disorder: A Systematic Review
Majd A Alnawwar et al. · Cureus · 2023
DOI 10.7759/cureus.43595
systematic_reviewCited 229×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Regular moderate-intensity physical activity improves sleep quality and reduces sleep disorders (e.g., insomnia) in adults, with benefits observed across age groups including children and the elderly.Good
- Excessively frequent (6+ times/week) and intense physical activity is a risk factor for insomnia and difficulty initiating sleep in some populations.Moderate
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