Hatha Yoga means it is a science of asanas. Asana means a posture. Innumerable asanas are possible. Of these innumerable postures that the body can take, certain postures have been identified as Yogasanas. Yoga means that which allows you to reach your higher nature. Asana means a posture. Now, that kind of posture which allows you to reach your higher nature is a Yogasana. Yogasanas are not exercises. Yogasanas are subtle processes to direct and activate your energy in a particular direction.
Balances the Autonomic Nervous System
Cardiovascular efficiency increases
Respiratory efficiency increases
Gastrointestinal function normalizes
Endocrine function normalizes
Excretory functions improve
Musculoskeletal flexibility
Joint range of motion increase
Weight normalizes
Sleep improves
Immunity increases
Pain decreases
Balance improves
Integrated functioning of body parts improves
Grip strength increases
Eye-hand coordination improves
Dexterity skills improve
Reaction time improves
Posture improves
Strength and resiliency increase
Endurance increases
Energy level increases
Steadiness improves
Depth perception improves
Somatic and kinesthetic awareness increase
Mood improves and subjective well-being increases
Anxiety and Depression decreases
Attention, Concentration improves
Memory improves
Learning efficiency improves