Taking deep breaths reduces physiological stress and negative emotions
Multiple clinical studies, reviews, and trials demonstrate that controlled deep breathing techniques effectively reduce physiological stress markers and alleviate negative emotions by enhancing parasympathetic nervous system activity.
The retrieved papers overwhelmingly support the claim that deep breathing reduces physiological stress and negative emotions. Studies such as those by [0], [3], [4], [6], [8], and [9] consistently find that deep breathing or slow, controlled breathwork decreases physiological indicators of stress (such as heart rate, blood pressure, and cortisol), enhances parasympathetic tone (HRV), and reduces subjective anxiety and perceived stress. There are no papers in the provided set that contradict this consensus.
Çağıl Ertürk, A. V. Özden. Comparison of the Acute Effects of Auricular Vagus Nerve Stimulation and Deep Breathing Exercise on the Autonomic Nervous System Activity and Biomechanical Properties of the Muscle in Healthy People. 2025. https://doi.org/10.3390/jcm14041046
Demonstrates that a single session of deep breathing exercises significantly decreases perceived stress, pulse, and blood pressure while increasing parasympathetic activity.
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Eiichi Togo, Miki Takami, K. Ishigaki. Evaluation of Autonomic Nervous System Function During Sleep by Mindful Breathing Using a Tablet Device: Randomized Controlled Trial. 2024. https://doi.org/10.2196/56616
Shows that mindful breathing exercises suppress sympathetic activity during sleep.
Lee KFA, Liang L, Suhail TA, Lee TMC. Integrated brain and body mechanisms underlying acute stress and trauma-related vulnerability.. 2026. https://doi.org/10.1016/j.ynstr.2026.100809
Finds that deep breathing interventions increase inspiration duration and reduce perceived stress levels.
Little AL. The A52 Breath Method: A Narrative Review of Breathwork for Mental Health and Stress Resilience.. 2025. https://doi.org/10.1002/smi.70098
Reports that slow, diaphragmatic breathing significantly improves vagal tone, heart rate variability, and emotional control while reducing anxiety and stress.
Maria Wydro, Magdalena Grotowska, Martyna Łukasiewicz, Aleksandra Strawińska. The Role of Controlled Breathing in Pain Management. 2025. https://doi.org/10.12775/qs.2025.37.57777
Indicates that slow deep breathing enhances heart rate variability, promotes parasympathetic activity, and reduces stress and pain levels.
Karppa E, Puura K, Jyskä I, Viik J, Pohjankoski H, Turunen M, Palmu S. VR-guided deep breathing during needle procedures in children.. 2026. https://doi.org/10.1038/s41598-026-44390-y
Confirms that virtual reality-guided deep breathing significantly reduces stress and fear while increasing parasympathetic activation during medical procedures.
Sharma N, Jha K, Munni C. Therapeutic potential of slow pranayama in anxiety.. 2025. https://doi.org/10.4103/jfmpc.jfmpc_570_25
Highlights the therapeutic potential of slow yogic breathing in reducing physical symptoms of stress and anxiety through autonomic nervous system regulation.
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