It's fun and its good for you!
All regular exercise like square dancing can help tone up your cardiovascular system and strengthen your weight bearing bones. If you need to exercise after illness, try square dancing as a good alternative to aerobics or jogging. Most of all square dancing is fun so it must be good for you.
Square dancing is a group activity. Go through the door of a square dance club and you will find yourself amongst a group of friends. As a member you will be able to take part in a range of social events and activities. It doesn't matter if you are a couple or single, you will be up dancing immediately.