fitness
noun [ U ]
uk/ˈfɪtnəs/ usactivities relating to keeping healthy and strong, especially through exercise:
The increase of interest in health and fitness means that most hotels now have gyms and pools.
the fitness industry/sector
a fitness centre/club
fitness trainers/instructors
the quality of being suitable for a particular job or of being good enough for something:
sb's fitness for sth They have to pass exams to test their fitness for the job.
sb's fitness to do sth Doctors will remain on the medical register only if they can demonstrate their fitness to continue practising.