Yoga
The word yoga itself means 'union': of the individual consciousness or soul with the Universal Consciousness or Spirit. There are various paths of Yoga (nearly forty) that lead toward this goal, each one a specialized branch of one comprehensive system. These schools are generally considered principal:

Hatha Yoga: a system of physical postures, or asanas, whose higher purpose is to purify the body, giving one awareness and control over its internal states and rendering it fit for meditation.

Karma Yoga: selfless service to others as part of ones larger self, without attachment to the results; and the performance of all actions with the consciousness of God as the Doer.

Mantra Yoga: centering the consciousness within through japa, or the repetition of certain universal root-word sounds representing a particular aspect of Spirit.

Bhakti Yoga: all surrendering devotion through which one strives to see and love the divinity in every creature and in everything, thus maintaining an unceasing worship.

Jnana Yoga: the path of wisdom, which emphasizes the application of discriminative intelligence to achieve spiritual liberation.

Raja Yoga: the royal or highest path of Yoga, formally systematized in the second century B.C. by the Indian sage Patanjali, which combines the essence of all the other paths.

Tantra Yoga: purification of the five elements to awaken your kundalini shakti. Combination of ritual, worship, discipline, meditation & the attainment of powers.

Patanjali

Patanjali compiled the Yoga Sutras between 2000 - 2500 years ago and this ancient and time-proven system continues to be a map of human existence. Considered the Raja (king) of Yoga he states that Yoga is the ability to direct the mind exclusively towards an object and sustain that direction without any distraction (meditation).

The attainment of a stable mind in a healthy body is the goal of Yoga. The methods given by Patanjali for us to reach this state are Kriya Yoga (also known as Karma Yoga in the Bhagavad Gita) and the eight parts of Ashtanga Yoga - yama, niyama, asana, pranayama, pratyahara, dharana, dhyanam, samadhi.

Ashta = 'eight' Anga = 'limb' Yoga = 'union':
1) Yama - the laws of life: nonviolence, truthfulness, integrity, chastity, nonattachment.
2) Niyama - the rules for living: simplicity, contentment, purification, refinement, surrender to the supreme self.
3) Asana - the physical postures,
4) Pranayama - breathing exercises,
5) Pratyahara - the retirement of the senses,
6) Dharana - steadiness of mind,
7) Dhyana - meditation,
8) Samadhi - the settled mind.

T Krishnamacharya

Tirumalai Krishnamacharya - yogi, healer, linguist, Vedic scholar, expert in the Indian Schools of thought, researcher, author... in other words, a legend. Born in 1888 in a remote Indian village, T Krishnamacharya who lived to be over hundred years old was one of the greatest yogis of the modern era. If today, yoga is an inherent part of the everyday lives of millions of people across the world, it is due in large measure to the pioneering efforts of T Krishnamacharya who revived yoga in the early twentieth century. While preserving ancient wisdom and reviving lost teachings, Krishnamacharya was also a revolutionary innovator who developed and adapted yoga practices that were as would offer health, mental clarity and spiritual growth to any individual in the modern-day world.

Krishnamacharya's knowledge of yoga was so vast that he taught each student differently. In refusing to standardize the practice and teaching methodology, Krishnamacharya created an understanding of yoga relevant for a broad spectrum of students. By integrating the ancient teachings of Yoga and Indian philosophy with modern-day requirements, Krishnamacharya created yoga practices that are as accurate and powerful as they are practical and relevant.

The offical site of the T Krishnamacharya

Paramahansa Yogananda

"We came from God and our ultimate destiny is to return to Him. The end and the means to the end is yoga, the timeless science of God-union." ---Paramahansa Yogananda

Paramahansa Yogananda was born Mukunda Lal Ghosh on January 5, 1893, in Gorakhpur, India, into a devout and well-to-do Bengali family. From his earliest years, it was evident to those around him that the depth of his awareness and experience of the spiritual was far beyond the ordinary. In his youth he sought out many of India's sages and saints, hoping to find an illumined teacher to guide him in his spiritual quest. It was in 1910, at the age of 17, that he met and became a disciple of the revered Swami Sri Yukteswar Giri. In the hermitage of this great master of Yoga he spent the better part of the next ten years, receiving Sri Yukteswar's strict but loving spiritual discipline. After he graduated from Calcutta University in 1915, he took formal vows as a monk of India's venerable monastic Swami Order, at which time he received the name Yogananda (signifying bliss, ananda, through divine union, yoga). His ardent desire to consecrate his life to the love and service of God thus found fulfillment.

Yogananda emphasized the underlying unity of the world's great religions, and taught universally applicable methods for attaining direct personal experience of God. To serious students of his teachings he introduced the soul-awakening techniques of Kriya Yoga, a sacred spiritual science originating millenniums ago in India, which had been lost in the Dark Ages and revived in modern times by his lineage of enlightened masters.
The offical site of the Self Realization Fellowship

Sri K. Pattabhi Jois

Sri Krishna Pattabhi Jois (Guruji) was born on the full moon day of July, 1915. As a young boy, Guruji started learning yoga from his guru, a man by the name of Sri T. Krishnamacharya. Guruji went on to attended the Sanskrit University of Mysore, where he eventually started the Yoga department from 1937 - 1973. Guruji went on to form the Ashtanga Yoga Research Institute and has since been teaching true to his Guru the original form of Ashtanga Yoga.

The official organizational site of Sri K. Pattabhi Jois and his school in Mysore India:
Ashtanga Yoga Research Institute

More on Yoga

Yoga is an ancient Indian practice, dating back some 4-5000 BCE, possibly even earlier. It is a scientific system designed to bring the practitioners health, happiness, and a greater sense of Self. In yoga, the body and mind are linked to create a state of internal peacefulness and integration, bringing the individual from a state of separation to a self-unity that is flexible, accepting and whole. At the practical level, and included in the contemporary definitions of yoga, are the actual physiological/mental techniques themselves. These techniques concentrate on posture and alignment, as well as creating a higher consciousness. Yoga utilizes stretching postures, breathing, and meditation techniques to calm the emotional state and the mind, and tone the body.

The word yoga comes from the Sanskrit root yuj meaning “to bind, join, attach and yoke, to direct and concentrate one’s attention on, to use and apply.” Therefore, yoga, in a sense, is the joining or union of the individual self or soul with the higher Self. Yoga means mystical union, oneness with the universe and the disciplines or practices that lead towards this union.

Yoga is a technique of personal development, which existed long before any system of philosophy. To find out what yoga is… the best way… is to practice it. In this way one can recognize the many faces of yoga as they are described in the Bhagavadgita, a great work on yoga from the sixth century BC, which are:

Yoga is equilibrium in success and failure.
Yoga is skilful living among activities.
Yoga is the supreme secret of life.
Yoga is the producer of the greatest happiness.
Yoga is affected by self-control.
Yoga is non-attachment.
Yoga is the destroyer of pain.
Yoga is serenity.

One of the central ideas of yoga, because it is revealed through practicing yoga, is the interdependence of all things, animate and inanimate, in the entire universe. Nothing can be taken in isolation. In the words of the poet John Donne, “No man is an island”. This sense of oneness of all things is often understood to be the “yoking” or “union” implied in the word yoga.

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