Lift your legs straight up above your head and bend your knees toward your chest until they are at about a 45-degree angle. Bring your right elbow in contact with your left knee. Then alternate with the opposite knee and elbow and repeat. You should feel it in your sides and abs. Consider Your Choices Once you have assessed your needs and budget. It just takes a bit of realistic planning.Because there is so much cardio exercise equipment to choose from that you may have several of these results in mind. Exercise equipment varies in its effectiveness in certain areas and by knowing what you want from your workout, you will be able to focus on those that do what you want. Also do an assessment of your comfort level with different types of equipment against your criteria. Why settle for anything less than the highest quality cardiovascular workout equipment available? There is no home exercise equipment on the market? The answer is "it depends" because each person has different needs, different space available to hold home fitness equipment, and again, price often