sentences:  In addition, there are eleven recognized regional service centers with around 800 national team athletes, a location for the Berlin School and Competitive Sports Center (formerly known as the sports school "Werner Seelenbinder"), the "House of Athletes" with around 200 boarding school places, and the Institute for Sports Science of the Humboldt University of Berlin, with approximately 500 students, and about 20 other sports clubs.More than 3,000 athletes use the Sportforum every day.Among other main users are BFC Dynamo, Eisbären Berlin junior teams, SC Berlin and SSG Humboldt zu Berlin, but also other clubs use the Sportforum as a training ground, such as Berlin TSC, Füchse Berlin, ALBA Berlin junior teams, SC Charlottenburg, SV Preußen Berlin or SG Weißensee.