Yoga: arriving at a place we have not been before; a science of the mind; to bring two things together- unite. The roots of Yoga can be traced back roughly 5,000 years to the Indus Valley civilization where the first seals depicting people performing asanas are found.
Those seeking to go beyond habituated thought and the stressful, distracting demands of materialist society are drawn to the meditative practices of yoga. Yoga reunites all opposites, using practices and systems dealing with regulations and exercises, to bring reconciliation between them. There are many styles that all stem from the same concept of sustaining a lucid, balanced mind; waking up the sleeping soul. The goal is to direct the mind to a state of stillness, without any distraction, while you remain conscious; achieving Kaivalya (freedom). Through practice you understand the purity, clarity, and maturity of intelligence.
Of course, there really is no goal when you practice asana or kriyas, the benefits will come when you enjoy the practice with an open mind and fresh insight. By focusing on the bandhas, "to bind or tie together", you will intensify the cleansing of pranayama and clear any energy blocks. These are "locks" in your body. The three most important are jalandhara bandha (involving the neck and upper spine), uddiyana bandha (between the diaphragm and floor of the pelvis), and mula bandha (between the navel and floor of the pelvis).