7: Cardiovascular Exercise

You can get a great low-impact cardio workout on an elliptical machine.

Any exercise routine should include some form of cardiovascular or aerobic activity performed at a continuous, moderate pace for at least 20 minutes at a time. This type of exercise raises your heart rate for an extended period and has the benefit of strengthening all of your body, including your heart and lungs. The more conditioned these organs are, the more efficient they will be. You'll have more endurance and be able to perform that other form of exercise -- sex -- for longer.

Many different kinds of exercise qualify as cardio. If you enjoy the great outdoors, consider speed-walking, running, bicycling or cross-country skiing. Gym machines like a treadmill or stationary bike can give you a cardio workout indoors. If you are concerned about the impact of exercises like running on your joints, you can try swimming or use an elliptical machine.

Also, check out target heart-rate calculators online or ask a personal trainer for guidance. Knowing the proper heart rate to maintain while exercising -- which varies depending on your age, fitness level and current health -- will help you stay safe while achieving the maximum benefit.