Your body needs exercise just the way your body needs food. No matter how overweight you are, you can do something to start the process of losing fat, strengthening your bones, and relieving your joints of the load that they're carrying. If you're overweight or have other medical conditions, you should consult your doctor before starting any exercise program.
Start small: Walk 5 minutes day, and increase by 1 or 2 minutes every few days. Soon, you'll be fit enough to walk an hour a day. You can even start small with resistance training. Doing simple exercises with soup cans or books will stimulate your muscles in new ways-and begin the process of kick-starting your metabolism so your body can burn fat.
If you want to live longer, start today. Your family-and your younger body-will thank you.