Personal trainers work with individual gym or fitness studio clients to design customized training and workout plans. They assess the fitness level of each client by evaluating their abilities, physical condition, and overall health to verify that all fitness regimens are appropriate. Additional responsibilities may include cleaning the gym equipment, maintaining the facility's safety protocols, and being available to members seeking advice on lifestyle modifications. Excellent customer service skills and the ability to use social media and networking to promote services and gain new clients are essential for this role.