What Can Yoga Do For Your Body?

Most adults who practice yoga describe it as good for flexibility, which undersells the benefits considerably. The clinical evidence on yoga now covers blood pressure, nervous system regulation, cortisol, balance, joint health, and cognitive function, a range that makes it one of the more thoroughly studied lifestyle interventions available to adults focused on prevention and longevity. 

Yoga Is a Nervous System Intervention First 

The reason yoga produces effects across so many body systems comes down to one mechanism: it shifts the nervous system from a state of sympathetic activation toward parasympathetic dominance. In plain terms, it moves the body out of the stress response and into the recovery response. That shift has downstream effects on blood pressure, heart rate, inflammation, sleep quality, and hormone balance. 

Chronic sympathetic overactivation — the physiological state that accompanies sustained stress — is not just an uncomfortable feeling. It is a driver of cardiovascular disease, metabolic dysfunction, and immune dysregulation. A 2024 systematic review and meta-analysis confirmed that yoga produces measurable reductions in perceived stress with low to moderate quality evidence, operating through exactly this parasympathetic mechanism (Schleinzer et al., 2024). Breathwork, which is central to yoga practice, is the primary tool through which that shift occurs, a point worth noting for members who practice yoga primarily as a physical exercise and skip the breathing components. 

The Blood Pressure Evidence Is Clinically Meaningful 

A 2025 systematic review and meta-analysis of 30 randomized controlled trials involving 2,283 participants found that yoga produced significant reductions in systolic blood pressure of approximately 8 mmHg and diastolic blood pressure of approximately 5 mmHg compared to waitlist controls (Cramer et al., 2025). For context, a reduction of that magnitude is comparable to the effect of some antihypertensive medications at low doses. It does not replace medication for members who need it, but for adults in the prehypertension range or those seeking to reduce medication burden under physician supervision, yoga is a meaningful addition to the management plan. 

The mechanism is well understood: controlled breathing activates the parasympathetic nervous system, reduces sympathetic tone in blood vessel walls, and improves baroreceptor sensitivity over time. These are not temporary effects from a single session, they accumulate with consistent practice. 

Interested in learning more about cardiovascular health? Watch this workshop on Heart Disease Prevention by Dr. Jonathan Marsh.  

Cortisol, Stress, and the Case for Regular Practice 

Among all exercise modalities studied for cortisol reduction, yoga has the strongest effect size. A 2025 network meta-analysis of 44 randomized controlled trials found that yoga produced the greatest cortisol reduction across all exercise types studied (Huang et al., 2025). Chronic cortisol elevation disrupts sleep, accelerates visceral fat accumulation, impairs immune function, and drives insulin resistance, a cascade that is particularly consequential in adults over 50 whose hormonal buffer systems are already less resilient. 

The cortisol-lowering effect operates through breathwork and the vagal activation it produces, which in turn modulates the hypothalamic-pituitary-adrenal axis, the body’s core stress-response system. This is the same mechanism that makes pranayama, the breath regulation component of yoga, clinically relevant even when practiced outside of a full yoga session. Because Dr. Grossman-Stuart is trained in this intersection of breath and nervous system physiology, she can help members apply it precisely rather than generically. 

Balance, Flexibility, and Joint Health 

A 2023 systematic review of randomized controlled trials found that yoga significantly improved balance in older adults, with a large effect size, and produced meaningful improvements in flexibility and muscle strength (Ko et al., 2023). The report also found significant reductions in depressive symptoms, with a moderate effect size. 

For adults over 50, balance is not a minor concern. Falls are a leading cause of injury-related mortality in this age group, and balance deteriorates predictably with age unless specifically trained. Yoga addresses this directly through proprioceptive loading, single-leg stability work, and the slow, deliberate transitions between poses that train exactly the neuromuscular coordination that prevents falls. Flexibility and joint health improvements reduce pain, improve gait, and support the ability to stay active in other activities such as running, golf, tennis, cycling — without injury. 

Doctor’s Note: Members managing joint pain or recovering from endurance activity will find that yoga complements rather than competes with other forms of exercise. 

What to Do Next 

• Consider yoga as a part of your performance and longevity goals. 
• Practice consistently rather than intensively. Two to three sessions per week of 30 to 60 minutes is the dose range reflected in most of the clinical literature. 
• Do not skip the breathing components where much of the nervous system and cardiovascular benefits originate. 
• Members managing blood pressure, chronic stress, insulin resistance, or joint health concerns should discuss yoga as part of a broader preventive plan with a concierge physician who can integrate it into the full clinical picture. 
• For members new to yoga, starting with a qualified instructor reduces injury risk and ensures proper alignment, particularly for those with existing joint or spinal concerns. Dr. Grossman-Stuart brings both clinical training and yoga teacher certification to that conversation, making her well positioned to guide members on where and how to start safely. 

Movement, Breath, and the Physician Who Understands Both 

Yoga’s clinical value lies in the combination of what it does to the body and the consistency with which those effects accumulate over time. For members of a concierge practice, the advantage is having a physician who understands both dimensions — the evidence behind the practice and the individual factors that determine how it fits into a specific member’s health plan. That kind of personalized guidance is what makes lifestyle-based medicine genuinely effective rather than broadly advisory. 

References 

• Cheng, N., Bell, L., Lamport, D. J., & Williams, C. M. (2022). Dietary flavonoids and human cognition: A meta-analysis. Molecular Nutrition & Food Research, 66(21), e2100976. https://doi.org/10.1002/mnfr.202100976 
• Devore, E. E., Kang, J. H., Breteler, M. M. B., & Grodstein, F. (2012). Dietary intakes of berries and flavonoids in relation to cognitive decline. Annals of Neurology, 72(1), 135–143. https://doi.org/10.1002/ana.23594 
• Nam, Y., Hwang, I. G., & Jang, H. H. (2026). Role of lycopene from tomato on cardiovascular risk: An umbrella review of systematic reviews and meta-analyses of intervention studies. Food & Function, 17(2), 622–630. https://doi.org/10.1039/D5FO04213E 
• Nishi, S. K., Khoury, N., Valle Hita, C., Zurbau, A., Salas-Salvadó, J., & Babio, N. (2023). Vegetable and fruit intake variety and cardiovascular health and mortality: A systematic review and meta-analysis of observational studies. Nutrients, 15(23), 4913. https://doi.org/10.3390/nu15234913 
• Zhang, Y., Zhang, W., Zhao, Y., Peng, R., Zhang, Z., Xu, Z., Simal-Gandara, J., Yang, H., & Deng, J. (2025). Bioactive sulforaphane from cruciferous vegetables: Advances in biosynthesis, metabolism, bioavailability, delivery, health benefits, and applications. Critical Reviews in Food Science and Nutrition, 65(15), 3027–3047. https://doi.org/10.1080/10408398.2024.2354937