The gentle stretching exercises of Yoga are vital for dynamic health and fitness, the foundation of all activities.
A good body is relaxed, strong, well aligned and constantly developing.
This is what Yoga will help you achieve.
The Sivananda Yoga system I teach is based on the ancient tradition of HATHA YOGA, which links movement, breath and relaxation. Stretching benefits the whole body by toning the muscles, strengthening the spine, increasing flexibility and assisting in the relaxation of the mind and emotions.

Since most of us want or need to change some aspects of our lives for the better, regular Yoga can help you…..

(Swami Sivananda)
As children, we delight in exercising every smallest muscle, this natural activity keeps the body fit and the musculature balanced.  As adults, our range of movements is limited by repetitive tasks. Long hours of sitting at a desk, head thrust forward and lower spine rounded, can cause the ligaments at the base of the skull to shorten, so that trying to straighten up produces pain, sometimes all down the spine (as the spinal ligaments are interconnected). Poor posture generally leads to stress on the lower spine, the hips and pelvis, resulting in backache and stiffness . Even such a simple action as carrying a bag  on the same shoulder can soon throw the whole skeletal frame out, with muscles overdeveloped on one side, until a vertebra might be displaced.

The skeletal muscles work on the principle of a balance of opposing forces - as one muscle contracts to produce movement, another relaxes and stretches to allow it. If the stretching or “antagonistic” muscle is stiff and weak with under-use, the contracting one cannot work efficiently - this is why we stretch and yawn to get our bodies moving. Stress can lead to permanently tensed muscles, which oppose every movement and make each action doubly tiring. Removing this tension through yoga relaxation techniques gives a rejuvenating ease of movement and freedom from aches and pains. The process of ageing can also cause the ligaments that bind the joints and the surface of muscles to lose tone and tighten; a sudden strain may then tear or snap them.
Yoga asanas give muscles and ligaments a slow, non-violent stretch, without the following sharp contraction of most sports. Stretching a muscle helps to contract more strongly, while the slow movements and deep breathing increase the oxygen supply to the muscles, preventing the accumulation of lactic acid in the fibres. The stretching and contracting muscles stimulate circulation to the tissues and organs and cause an increased venous return.

Regular practice of the full asana sequence, which is designed to stimulate the circulation and to work systematically on every part of the body so that the muscles are healthy and in balance, will keep you young and agile throughout your life.