Ключевые слова: abdominal, abs, anabolic, androgen replacement therapy, androgens, andropause, art, body, bodybuilder, bodybuilding, boost, concept, cycle, deficiency, endocrine, fitness, formula, gain, growth, health, high, hormonal, hormone, hypogonadis, increase, level, libido, low, male, man, masculine, mass, muscle, muscular, natural, power, progress, reproductive system, sport, steroids, strength, testosterone, torso, training, vitality, workout,