Cardiovascular fitness can be defined as your body's ability to get oxygen and blood to the muscles. There is low, medium, and high intensity.
Resistance training is designed to improve your muscle fitness by exercising a specific muscle or group of muscles against an external resistance. Resistance training can take many forms, including medicine balls, weight machines, and free weights.
Flexibility is the ability to move a joint through its full range of motion (ROM). Flexibility training is incorporated into physical fitness plans for a variety of reasons including relieving joint stress.