Top Ten Reasons to Stay Active:

You keep muscle mass and since muscle cells burn more calories, you can even lose some weight.
When you exercise doing weight bearing activities (walking, aerobics, using weights, etc.) you have less bone loss and you can help prevent or slow down osteoporosis.
You keep your joints mobile and flexible – reducing the stiffness you feel.
You will have better balance – reducing the occurrence of falls.
You stay brighter and more mentally alert (you have increased blood flow to your brain – always a good thing).
You can reduce some stress.
You can eat more.
You help your heart and lungs.
You can increase your overall endurance or stamina.
You can just in general enjoy more things.