It is not what you are doing, as much as it is whether or not you are doing something.
Any type of moderate activity like walking, swimming, biking or organized sports can contribute to your physical fitness. Explore your fitness options at your local gym, community center or community college for courses and organized activities that may suit your lifestyle and interests.
To get the most benefit, you should begin by warming up for 5 to 10 minutes to increase your blood flow and prepare your body for activity. Follow the warm up with several minutes of stretches to increase your flexibility and lower your risk for injury. Complete your selected exercise or activity for 20 to 30 minutes and conclude the workout with 5 to 10 minutes of cool down and stretching.