It is a continuous series of 8 related Yoga postures,
some done twice, in what totals 13 poses.
It is designed to warm up your whole body and integrate the body, mind and breath.
The Sun Salutation is a warm up or toning exercise
and is considered the best of all Yoga exercises
as it stretches, compresses, arches and reinforces all the major muscles of the body,
as well as the digestive and respiratory organs.
It also helps develop flexibility, strength, balance, concentration and focus.
Sun Salutation is a great way to synchronize your breath
and can be practised twice a day."
from http://www.yogawiz.com/surya-namaskar-sun-salutation-step-by-step.html

Start in a standing position,
facing the sun.
Both your feet should touch each other,
palms joined together,
in prayer pose.