Some focus on a slower pace, working on alignment and posture with stretches that are held for long periods. This would benefit those who have tight muscles and are recovering from injury (those who need to work on their flexibility and posture, e.g. the elderly, people returning to sport, ex sports people, those suffering from long term complaints), stretches are held for longer to release deep muscles and connective tissue.
Other Yoga types include those that strengthen the body and improve stamina, a little more strenuous, for those that may be a little more able but still great for those who have suffered an injury or just want to improve fitness. It will improve your strength and stability in a safe way, especially to prevent any re-occurrence of an injury. Those it would suit are office workers, people who have a level of fitness but who have had an injury and need to exercise safely and improve their alignment and flexibility, it is a low impact workout.