Interview With Mark Winkler, Systema Teacher & Self Protection Expert Interview with Mark Winker, Systema master ___________________________________________________________________________________ FREE 4 UNIQUE EBOOKs Multiply your effectiveness with more impact for less effort and where to hit for best effect. Bonus: Historical look at Bassai Dai, one of Karate’s most pivotal katas Name Email Address Leave this field empty if you're human: ___________________________________________________________________________________