Nothing in the world is more flexible and yielding than water. Yet when it attacks the firm and the strong, none can withstand it, because they have no way to change it. So the flexible overcome the adamant, the yielding overcomes the forceful. Everyone knows this, but who acts afterward!?

What is Seiwasser?

„Seiwasser“ is a philosophical upper concept and means „be like water“. Very briefly: Water is the softest substance on earth. It can flow softly or hit powerfully. It contains the two most extreme properties, therefore this softest element can destroy the hardest or just flow around it. Water always adapts itself in a perfect way.
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Yasin Seiwasser

At the age of eight, Yasin Mengüllüoglu from Böblingen / Germany started with karate and judo. Today he can look back on 30 years of martial arts experience in various styles: Jiu-Jitsu, Taekwondo, Boxing, Muay Thai, Wrestling and Wing Chun. At the age of 25, he began his career as an international Martial Arts coach: Team Nogueira in Rio and Miami, Muay Thai in Thailand, Boxing and Wrestling in Cuba, in Las Vegas with Wanderlei Silva, in Los Angeles in Kings MMA with Rafael Cordeiro, as well as Boxing with Freddy Roach. Always on the road between Australia, Costa Rica, Brazil and New York, Yasin gives seminars and teaches in the most famous and best MMA gyms in the world. In addition, he trains and coaches, among others, several UFC fighters and accompanies them to the fights.Yasin worked for years as a professional bodyguard for many VIPs, including the King of Saudi Arabia. He was a close combat instructor for Special Forces and Marines and has fought successfully for several years in MMA (German Champion in the 8 man tournament and European champion in MMA). His motto is the open mind philosophy: Take what is useful and discard what is useless. Be always willing to extend your knowledge. He passes these experiences on to his students in Böblingen. In addition, his students have the opportunity to accompany him several times a year to training camps in various countries such as Brazil, Thailand or the United States.
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Insight into Seiwasser Martial Arts

A small insight into Seiwasser Martial Arts. The most effective and simple techniques from various martial arts + self-created techniques based on over 30 years of intensive experience from Sensei Yasin Seiwasser. Functional strength + cardio training and additional mental training that completes this art and makes it into a complete martial arts form.
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