noun
fitness club; gym; health spa
A facility with exercise equipment, classes, and sometimes spa services. Often used interchangeably with ジム, though フィットネスクラブ may imply a broader range of amenities.
週に3回フィットネスクラブに通っています。
I go to the fitness club three times a week.
新しいフィットネスクラブにはプールもあり
The new fitness club also has a pool.