Systema ground acrobatics: The Slide
6:12
Systema groundacrobatics: Russian bicycle
4:34
Systema: Falling backwards
6:10
Systema principles: usage of levers
5:25
Systema: Principle of balance
5:57
What is The Curve Step
9:09
ACTIVE DEFENSE VS JUST COVERING YOUR HEAD
7:20
Kevin Secours - Systema Forward Roll
5:24