In order to get fit and build strength, you don't have to suddenly drop to the ground to reap the benefits; you just have to start with a warm-up and little exercises which will build your body to accommodate major strength pieces.
Another excellent way to train your cardio is to go up and down stairs more often; this not only gives you more "breath" but also increases the strength of your legs making you feel very comfortable and safe. You don't have to spend hours every day to get good results, 30 minutes is enough.
A good time for a leisurely walk is after a meal; it will put your body at work to burn calories and can help you escape the completely uncomfortable feeling of fullness. Do this regularly and you will see amazing results, and when combined with better nutrition, it will help you immensely.
As you expand your cardio fitness and strength training options, you'll want to do even more. The best way to do this is by wearing a heavy vest. You can use it while walking on plains, hills, or stairs.
Another use of the vest is that you can wear it while jumping or doing aerobics. It's really a very flexible tool that can accelerate your fitness tremendously. As for how to use it, you're really only limited by your imagination and desire to try new things and ideas.
Make yourself feel the same and add good years to your active life.