Vyayam
Vyayam is a system of physical training designed to build strength and develop muscle bulk and flexibility. It is in sympathy with the concept of health and fitness articulated through yoga. Yam and niyam are central to its practice. Unlike yoga, however, vyayam emphasizes physical strength. Where Hatha Yoga concentrates on the harmonization of all aspects of the body, vyayam builds on this harmonization through calisthenic and cardiovascular exercise. As with yoga, a key concept in vyayam is the holistic, regulated control of the body. In yoga, however, the body is manipulated through the practice of relatively static postures. Vyayam disciplines the body through strenuous, patterned, repetitive movement.
K. P. Singh has delineated twelve rules of vyayam (1973). Although his list is not exhaustive, it is useful in terms of understanding how vyayam is conceptualized as a system of physical fitness: 1) One should arise before dawn, defecate, bathe, oil oneself and go to the akhara. 2) At the akhara tie on a langot and join the company of other like-minded wrestlers who have focused themselves on the task at hand. Be sure that the place for exercise is clearly demarcated, for it is no less important to define a place for exercise and physical training than for spiritual contemplation. 3) Do not start off by over-exercising. Pace yourself so that you will not be exhausted. 4) Regulate your exercise regimen by either counting the number of repetitions, or timing the duration of your workout. Only in this way will your body develop at a regular and consistent pace. 5) Do not fall into the practice of exercising at irregular intervals. Exercise every day at the same time. 6) One should breathe deeply and steadily while exercising. Each exercise should be done to the rhythm of a single breath. Needless to say, one should breathe only through the nose. 7) Beware of sweat. Oil your body before exercising. The oil will fill the pores and prevent rapid cooling. 8) Focus your mind on each exercise. If your mind wanders you will not develop strength. Consider the laborer who works all day long. He is not as strong as the wrestler for he does not concentrate on his labor but thinks about other things. 9) Do not sit down after exercising. Walk around to keep warm and loose. If you exercise inside, walk around inside. If you exercise outside, walk around outside. 10) Get enough rest. Take one day off every week. Be asleep by eight in the evening. 11) Do not exercise on either a full or empty stomach. Also do not exercise if you have not evacuated your bowels. Do not smoke or chew tobacco. 12) Drink a glass of juice before exercising, and drink milk or some other tonic after exercising. This will help to focus your mind and relax your body.
As a system of fitness, vyayam comprises specific exercise routines.