There are many different synonyms for the term "health spa" depending on the specific focus and services provided. Some common alternatives include wellness center, fitness resort, retreat center, holistic spa, and relaxation spa. Each of these terms emphasizes different aspects of the spa experience, from physical fitness and exercise to mental and emotional health and wellbeing. Other potential synonyms might include meditation retreat, luxury spa, or natural health center, depending on the specific focus and offerings of the establishment. Regardless of the term used, the primary focus of these types of spas is to support holistic health and wellbeing in a calming and rejuvenating environment.