Try for all-around conditioning, not just one aspect. When choosing your activity be sure to consider the availability of facilities and the cost. Some people feel they will attend more regularly if they joined a club or hired a personal trainer. Others choose to buy equipment and workout at home. Besides the equipment needed to exercise, you must wear appropriate attire.
Footwear is very important.
When possible, exercise at the same time each day. This helps to form a schedule. Once you have a routine it becomes a natural part of your week. If you are male and older than 35 or female and over 40 or have any preexisting health concerns please see your doctor to receive medical clearance to participate in exercise. There may be a valid reason why you should limit your participation or not exercise at all.