Osu! 17-19 September 2021 was held International Seminar Full Contact Karate SEIKYOKUSHIN & SHINKARATE at Martial Arts Academy of Sensei Jacek Szymański in Siedlce, Poland. We teach the special technics and combination of Knockdown Kumite – Seikyokushin and Full Contact Kumite(boxer gloves) – Shin Karate. Despite the fact that more than half of the students…