Yoga for Health Promotion, Lifestyle and Stress Management
Yoga as health promotion
Yoga works at three levels: prevention (lifestyle, posture, breath), promotion (fitness, immunity, mental wellbeing) and support for management of non-communicable diseases - hypertension, type 2 diabetes, obesity, dyslipidaemia, asthma, chronic low back pain, arthritis and anxiety. The evidence base is strongest for low back pain, stress and anxiety, sleep quality and modest blood-pressure reduction. Always frame yoga as complementary to medical care: an instructor does not diagnose, prescribe or advise stopping medication.
The stress model
Hans Selye's General Adaptation Syndrome has three stages: alarm, resistance and exhaustion. Chronic stress raises sympathetic activity and cortisol through the HPA axis, disturbing sleep, digestion, blood pressure and mood. Yoga intervenes with slow breathing, longer exhalation, relaxation (Savasana, Yoga Nidra), mindfulness and asana that discharge muscular tension - collectively Herbert Benson's relaxation response.
Yogic lifestyle
Dinacharya (daily routine), ritucharya (seasonal adjustment), mitahara (moderate, sattvic diet), adequate sleep, and the yamas and niyamas as behavioural anchors: ahimsa toward oneself, santosha (contentment), tapas (discipline), svadhyaya (self-study). For stress management, teach simple, repeatable tools: 4-6 breathing, body scan, gratitude and gentle restorative asanas.
Traps and a rule of thumb
Traps: options claiming yoga cures diabetes or replaces medication, or that stress is always harmful (short-term stress is adaptive). Also watch for the wrong stage order in GAS. Rule of thumb: screen, modify, refer - ask about conditions, adapt the practice, and send the student to a doctor when symptoms are red flags (chest pain, sudden breathlessness, uncontrolled BP).