Nader Lavaei is a bodybuilding coach specializing in bodybuilding, fitness, and physical conditioning. He works in strength training and helps athletes improve their physical performance. He focuses on teaching proper exercise techniques, increasing muscular strength and endurance, improving body composition, and enhancing overall physical fitness. He strives to guide training programs according to each individual's fitness level, abilities, and athletic goals. Proper exercise execution, injury prevention, and gradual athletic progress are among the main principles of his coaching approach. Nader Lavaei works as a coach at Houman Bodybuilding Gym in Tehran, where he adopts a goal-oriented and athlete-centered approach. He emphasizes teaching correct training techniques, using bodybuilding equipment properly, and improving athletes' physical capabilities. By promoting discipline, consistency in training, motivation, and safety, he aims to create a professional and supportive environment for athletes of different fitness levels and help them achieve their fitness, muscular strength, and athletic goals.

Houman Karimi is the manager of Houman Bodybuilding Gym in Tehran and is active in sports facility management. He plays a role in managing and developing the gym's operations, focusing on improving service quality, upgrading facilities, and creating a professional environment for athletes. Considering the gym's long history since 1995 (1374 in the Iranian calendar), he emphasizes maintaining its reputation, modernizing sports equipment, and providing suitable conditions for bodybuilding, strength training, and fitness activities. As the manager of Houman Bodybuilding Gym, Houman Karimi is responsible for overseeing daily operations, coordinating gym activities, and addressing the needs of members. By prioritizing organization, hygiene standards, equipment quality, and member satisfaction, he strives to provide a well-equipped, comfortable, and motivating environment for athletes of all fitness levels. His goal is to preserve and strengthen Houman Gym's position as one of the long-established bodybuilding facilities in Tehran's Enghelab Square area and to ensure a positive training experience for its members.