The company 'Fitness Highlight' offers a wide range of services in the areas of fitness, wellness, and health. The core activities include: * Group Fitness: The company offers various course types such as yoga, Pilates, Zumba, and others. * Strength and Endurance Training: Individual training programs are created to improve the fitness and endurance of customers. * Physiotherapy: The company offers physiotherapeutic treatments to alleviate physical complaints and improve quality of life. * Osteopathy: Osteopathic treatments are offered to restore the body's balance. * Massages: Various medical massage techniques are offered to relax customers and loosen their muscles. * Wellness and Cosmetics: The company offers various wellness services such as sauna and cosmetic treatments. Overall, the core activity of the company can be described as a 'Health and Fitness Center' that offers a wide range of services in the areas of fitness, wellness, and health.