Pranayama is a family of yogic breathing techniques that deliberately change breath pace, depth, and rhythm to influence the body's stress and recovery systems. Gentle slow breathing most reliably lowers blood pressure, calms the nervous system, eases anxiety, and improves lung function. Sleep and mood benefits are less certain; longevity unproven. It is free, low-risk, and safe when done gently. (Full Review)

Protocol

Core Practice

Slow breathing, ~6 breaths/min

~5s inhale, 5s exhale (slightly extended exhale), 5–20 min daily

Foundational Technique

Alternate-nostril breathing (Nadi Shodhana)

5–10 min; calming and accessible for beginners

Timing

Morning, empty stomach

Calming techniques also used evening for sleep; fast techniques avoided near bedtime

Time to effect

Acute effects

Single session

Heart rate variability, relaxation, and blood pressure during practice

Blood pressure & anxiety

Several weeks

Sustained reductions with consistent daily practice

Lung function

1–4 months

Gains in standard lung-function measures

Benefits

High: Reduced blood pressure, enhanced heart rate variability and vagal tone, reduced anxiety and acute stress, improved pulmonary function

Medium: Improved sleep quality, reduced depressive symptoms, asthma symptom support, enhanced attention and cognitive performance

Low: Glycemic and metabolic support, reduced systemic inflammation

Speculative: Slowed cellular aging and longevity, long-term cardiovascular disease prevention

Contraindications

Uncontrolled hypertension

Established cardiovascular disease (incl. recent cardiac events)

Glaucoma or recent eye surgery

Epilepsy

Pregnancy

Recent chest or abdominal surgery

Hernia

Active respiratory infection

Panic disorder

Key Interactions

Blood-pressure-lowering medications

Glucose-lowering medications

OTC decongestants (pseudoephedrine, phenylephrine) and NSAIDs (ibuprofen, naproxen)

Sedating OTC antihistamines and sleep aids (diphenhydramine)

Blood-pressure-lowering supplements (magnesium, potassium, omega-3, coenzyme Q10, dietary nitrate)

Glucose-lowering supplements (berberine, chromium, alpha-lipoic acid)

Other slow-breathing and relaxation interventions (device-guided breathing, coherent-breathing apps, meditation, biofeedback)

Sedatives and central nervous system depressants

Risk & Side Effects

High: Dizziness and lightheadedness, hypocapnia-related tingling and muscle spasm

Medium: Elevated intrathoracic and intraocular pressure from breath retention, anxiety or panic provocation

Low: Fainting, symptom exacerbation in uncontrolled cardiorespiratory disease

Speculative: Pneumothorax or pneumomediastinum, seizure provocation in susceptible individuals

Monitoring

Marker	Target	Why
Resting blood pressure	~110–120 / 70–80 mmHg	Primary cardiovascular outcome pranayama can improve
Resting heart rate	~50–65 bpm	Reflects autonomic balance and training effect
Heart rate variability (RMSSD)	Higher relative to personal baseline	Core marker of vagal tone targeted by slow breathing
Resting respiratory rate	~10–14 breaths/min at rest	Indicates baseline breathing efficiency and calm
Peripheral oxygen saturation (SpO₂)	95–99%	Confirms adequate oxygenation, useful with respiratory conditions

Cadence: Baseline reading, reassess at ~4–8 weeks, then every 3–6 months; blood pressure checked more frequently for those with hypertension or on blood-pressure medication

Qualitative Assessment

Subjective calm and reduced day-to-day anxiety
Improved sleep onset and sleep quality
Perceived breathlessness during light exertion
Energy levels and daytime alertness
Ease and comfort of the breath during practice (less straining over time)

Pranayama for Health & Longevity

Protocol

Benefits

Risk & Side Effects

Monitoring

Qualitative Assessment