Answer: muscletone

AnswerCrossword Clue
MUSCLETONEFitness buff's concern
MUSCLETONEExerciser's goal
MUSCLETONEIt helps maintain posture
MUSCLETONEMeasure of fitness
MUSCLETONEBodybuilder's concern
MUSCLETONEFitness indicator
MUSCLETONEExerciser's concern
MUSCLETONEWorking out increases it
MUSCLETONEOne result of exercise.
MUSCLETONEGymgoer's goal
MUSCLETONEExerciser's goal, perhaps