A personal trainer is a fitness professional who helps individuals achieve their health and fitness goals. They create customized workout plans, provide guidance on proper exercise techniques, and offer motivation during training sessions. Personal trainers often work in gyms, fitness studios, or even in clients' homes. In addition to physical training, personal trainers may also provide advice on nutrition and lifestyle changes. They assess clients' fitness levels and track progress over time, ensuring that workouts are effective and safe. Many personal trainers hold certifications from recognized organizations, which demonstrates their knowledge and expertise in the field of fitness.