Sivananda Yoga is a spiritual yoga system founded by Vishnudevananda; it includes the use of asanas but is not limited to them as in systems of yoga as exercise. He named this system, as well as the international Sivananda Yoga Vedanta Centres organization responsible for propagating its teachings, after his guru, Sivananda with the mission 'to spread the teachings of yoga and the message of world peace' which has since been refined to 'practice and teach the ancient yogic knowledge for health, peace, unity in diversity and self-realization.'
There is a wide variety of schools of yoga, practices, and goals in Hinduism, Buddhism, Jainism and other traditional and modern yoga styles practiced worldwide.
Within the major branches of yoga such as haṭha, lāya, rāja, jñāna, and bhakti there are many different schools and lineages, both extant and defunct.
Since the late 19th century, a great number of distinct new styles of "Yoga" have been introduced by individual teachers.
Some schools and traditions are occasionally .
Prenatal yoga is a style designed for pregnant women to practice, regardless of their due date. The mixture of stretching, controlled breathing, and mental focus offers a variety of benefits to expectant mothers. This form of yoga can also increase strength and flexibility in the muscles used during childbirth.
Prenatal yoga may reduce stress levels and improve sleep patterns during pregnancy. It may also alleviate physical discomforts such as nausea, headaches, and lower back pain. .