A personal trainer is a fitness professional who assists clients in achieving their health and fitness goals. They create personalized exercise and nutrition plans, provide instruction and advice, and motivate and support their clients. A personal trainer also performs assessments to determine a client's current fitness level and to help set achievable goals. With their expertise, they can help clients lose weight, build muscle, improve endurance, increase strength, and become healthier overall. Personal trainers are knowledgeable about the latest exercise techniques and can help clients stay motivated and achieve their goals. They strive to help their clients reach their maximum physical potential and enjoy a healthy, active lifestyle.