Yoga has enjoyed quite an increase in popularity over the past few years. There has also been a big increase in yoga centers that offer yoga classes. Yoga is an ancient practice that has developed from the styles of many masters over the centuries. There are forms that are purely for physical exercise and others that try to form a link from the physical body to the spiritual.

The term "Yoga" does not just refer to stretching exercises, but rather covers four broad spiritual areas:

• Karma yoga - focuses on giving of oneself without expecting any reward or "yawn", the manner in which a man realizes his own divinity through work and duty.
• Bhakti yoga - channeling emotional energy into one's spiritual practice, the realization of the divinity through devotion to a Personal God, channeling emotional energy into one's spiritual practice.
• Jnana yoga - a philosophical approach to unveiling the illusions of the world , the realization of a man's own divinity through knowledge.
• Raja yoga - focuses on concentration and mind control. It is within Raja yoga that we find Hatha yoga, the physical practice, which is what most people refer to when using the term "yoga."