Isometric exercises are great for strengthening your muscles, especially the most important muscle, the heart. You actually work your muscles against each other by tightening and then relaxing them. This makes the blood pump to the muscles, and taking deep breaths as you exercise will open your lungs and strengthen them. When breathing deep, the lungs fully expand, allowing us to take in more oxygen. Holding the breath for a few seconds and then releasing slowly will strengthen the heart and the lungs. Try this for ten minutes a day and see if you aren't soon breathing better.

Isometric exercises are non-intrusive and non-stressful; you can do them sitting at your desk and no one will even realize you are doing them. The improved breathing increases your energy level and gives you a sense of well-being. Along with your isometric exercise program, you need to include proper nutrition and adequate rest. These exercises should be preformed a minimum of three times a week for several months for the best results. Nothing comes easy, but isometric exercises are not hard to do.

Your body is all you need for these exercises. You just increase the tension in the muscles of the area you want to work on, in this case the muscles in your chest and your heart. If your tighten your abdominal muscles as well, you will then get two benefits from this exercise. You can also add these exercises when you are walking and get even more benefits. As with any exercise program, the key to isometrics is consistency.