High-Intensity Yoga: A New Key to Better Sleep?
Recent research indicates that regular, high-intensity yoga may be particularly effective for improving sleep quality. A meta-analysis of 30 randomized controlled trials found that high-intensity yoga was more strongly associated with improved sleep compared to walking, resistance training, combination exercise, aerobic exercise, or traditional Chinese exercises like qi gong and tai chi. The analysis included over 2,500 participants with sleep disturbances from more than a dozen countries.
Yoga's Specific Effectiveness
Researchers at Harbin Sport University in China determined that high-intensity yoga, performed for less than 30 minutes, twice a week, was the most effective exercise for addressing poor sleep. Walking was identified as the next most effective, followed by resistance exercise. Positive outcomes were observed within 8 to 10 weeks.
Inconsistencies with Prior Research
These findings, published in 2025, present some inconsistencies with a 2023 meta-analysis, which suggested that aerobic or mid-intensity exercise three times a week was most effective for improving sleep. However, one study within that prior review did indicate yoga's significant effects on sleep outcomes. The varying intensity and categorization of yoga may contribute to these differing results.
Why Yoga Might Be Uniquely Beneficial
While the recent meta-analysis does not fully explain why yoga might be uniquely beneficial for sleep, several theories exist. Yoga can elevate heart rate, engage muscles, and regulate breathing. Breath control is known to activate the parasympathetic nervous system, associated with 'rest and digestion.' Some research also suggests yoga may regulate brainwave activity, potentially promoting deeper sleep.
Limitations and Future Research
Despite general evidence supporting exercise for sleep, studies comparing specific exercises and their long-term effects remain limited.
Researchers from Harbin Sport University advise caution when interpreting findings on sleep disturbances due to the limited number of studies and the specific characteristics of the population, calling for further high-quality research.
Tai Chi Also Shows Promise for Sleep
Another study published in 2025 found tai chi to be effective for improving sleep, with results comparable to cognitive behavioral therapy for insomnia (CBT-I) in the long term. While CBT-I initially showed greater reductions in insomnia symptoms, the tai chi group achieved similar improvements in sleep quality, duration, quality of life, mental health, and physical activity after 15 months. This suggests that the accessibility and ease of integrating tai chi into daily life could support its long-term effectiveness.
Conclusion: Exercise for Better Sleep
Both yoga and tai chi are suggested as beneficial options for improving sleep, especially as long-term supplements to existing therapies. The yoga study was published in Sleep and Biological Rhythms.