“Circuit 45” fitness classes typically involve a circuit training workout lasting 45 minutes, where participants rotate through various exercise stations targeting different muscle groups. These workouts combine strength training, cardio, and flexibility exercises to deliver a full-body workout in 45 minutes. The short duration of each station maintains high intensity and often incorporates free weights, bodyweight exercises, and cardio equipment. Known for their efficiency, Circuit 45 classes effectively build strength, endurance, and enhance overall fitness.