-Breathing in, I calm my body. Breathing out, I smile.-
Yoga postures are called asanas. Asana means "a posture producing physical comfort and mental composure".
The asanas, or yoga postures not only tone the muscles, increase flexibility and improve the posture through alignment, but they also have a profound impact on the endocrine glands, balancing the secretion of hormones and restoring psychic and emotional well-being, hence the emphasis is not on vigour of execution, but on proper positioning, proper breathing and a quiet, but persistent flow of movement, which in turn applies pressure on the relevant glands and inner organs and achieves a general sense of well-being.