Relaxing in stressful circumstances comes down to good, deep, rythmic breathing and you can learn that without paying ungodly amounts of cash. But I've never tried systema so I really can't truly say what it's all about I'll have to check it out one day.
Member of DaJoGen MMA school under Dave Hagen and Team Chaos fight team under Denver Mangiyatan and Chris Toquero, ran out of Zanshin Martial Arts in Salem Oregon:,