Physical Education · Ch 3 — Yoga as Preventive Measure for Lifestyle Disease
Introduction
Introduction
Modern life has quietly reshaped the way our bodies work. Long hours seated at a desk, meals chosen for convenience over nourishment, little real movement and a steady background of stress have together given rise to a group of illnesses that were once uncommon: the lifestyle diseases. This unit of the CBSE Class 12 Physical Education course studies how yoga can be used as a practical, drug-free way to prevent and manage five of them — obesity, diabetes, asthma, hypertension, and back pain and arthritis.
What is a lifestyle disease?
A lifestyle disease is a health condition whose onset and progress are closely tied to the way a person lives from day to day. Unlike an infection, which you catch from a germ, a lifestyle disease builds up slowly over years as the result of repeated habits — poor diet, physical inactivity, chronic stress, and the use of tobacco or alcohol. These are, in a real sense, diseases of pattern rather than diseases of chance, and the most important fact for a student is that they are largely preventable.
Lifestyle diseases are chronic — they last a long time and tend to worsen gradually. Prevention, begun before symptoms appear, is far more effective than treatment afterwards.
Why yoga?
Yoga works on the body, the breath and the mind at the same time. The asanas (postures) stretch, compress and tone the muscles and internal organs; the pranayama (breathing practices) improve the way the body takes in oxygen and manages energy; and the overall discipline lowers stress. Because yogasanas are performed slowly, they calm respiration and metabolism rather than exciting them the way vigorous exercise does — which is exactly why they suit the long-term, preventive management of lifestyle disease.
How this unit is organised
For each of the five lifestyle diseases, the syllabus prescribes a set of asanas and pranayamas, and for each one you must know three things — its Procedure, its Benefits, and its Contraindications (the conditions in which it should not be practised). This first section deals with the asanas recommended to prevent obesity. Where the same asana returns later for another disease, its full description is given once, here, and simply referred back to.