"If you have access to a swimming pool through your community, YMCA, or health club, consider water-based exercises, such as water aerobics classes. Water removes the pressure of gravity and supports your body while providing a little bit of strengthening resistance. Immersion in water can also be very good for the circulatory system.
"And remember: The most important step of all is the very first one. Just get started, and you can modify your routine from there."