Since Sama Vritti Pranayama is entirely equal in all parts, it allows the body to feel both relaxed and focused simultaneously. During my Yoga Teacher training in India, trainers stressed the importance of developing equal breathing. Most of us simply cannot inhale as long as our exhale. So, we need to practice to develop the lung capacity as well as strengthen the accessorial breathing muscles.
Yogic breathwork, or Pranayama (praa·nuh·yaa·muh), is the foundation for all Yogic practices. Without Pranayama, Yoga would simply be another exercise – a good way to work those muscles, but nothing deeper!