Ключевые слова: 3035, 30s, 3540, 40s, adult, africanamerican, american, asian, attack, brazilian, cameroonian, caucasian, defence, defending, defense, endurance, ethiopian, european, exercise, female, fight, group, group of people, gym, hispanic, indoor, kazakh, latina, male, man, martial, martial art, mongolian, nigerian, person, portuguese, protective, self defence, self protection, selfdefence, selfdefense, sport, strength, strong, thai, training, woman, workout,