A qualified professional who designs and supervises a client's individual workout programme is called a personal trainer.
Personal trainers assess a client's goals, fitness level, experience, and limitations before planning exercise sessions. They may demonstrate technique, select suitable exercises, adjust training loads, track progress, and provide motivation. A programme might combine strength training, cardiovascular work, mobility exercises, and recovery days.
The title does not automatically mean the person is a doctor, physiotherapist, or registered dietitian. Trainers can give general exercise and lifestyle guidance, but injuries, medical conditions, and clinical nutrition questions may require other qualified professionals. Certification and legal requirements vary by country and by employer.
A personal trainer is also different from a fitness instructor in a group class. An instructor usually leads several participants through a shared session, while a personal trainer typically tailors instruction to one client or a small group. Good trainers also recognise when an exercise should be modified or stopped for safety.