Sebastian Kupsa is currently preparing intensively for the World Junior Championships from 18th to 27th September 2026 in Jesolo, where he will compete in the U13 to 37 kg class. Since the beginning of the summer holidays, the final and extremely demanding preparation phase has been running. The tight training program includes six to eight units per week. The focus is on a versatile sports training: In addition to 3 to 4 kickbox units, which are…
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Sebastian Kupsa is currently preparing intensively for the World Junior Championships from 18th to 27th September 2026 in Jesolo, where he will compete in the U13 to 37 kg class. Since the beginning of the summer holidays, the final and extremely demanding preparation phase has been running. The tight training program includes six to eight units per week. The focus is on a versatile sports training: In addition to 3 to 4 kickbox units, which are…