Ключевые слова: abdominal muscle, active lifestyle, assistance, athlete, bodyweight training, caucasian ethnicity, coach, confidence, dedication, determination, effort, equipment, exercising, friendship, gym, health club, heterosexual couple, improvement, indoors, instructor, men, motivation, physical activity, practicing, shirtless, sport, strength, support, togetherness, two people, warming up, wellbeing, women, young adult,