What's a good, cheap form of exercise?

Tennis is good and cheap and a great work out. If you are both starting together you can learn and get better together. Most tennis courts in communities are free.

Walking is always an excellent form of exercise,also you can get inexpensive videos that might have an exercise routine that would work for you.

Swimming, walking, and a pilates ball. The pilates ball only casts around ten dollars, and can be used while you're watching TV.

go walking at a park, make it fun, race her. Join a group at the park to play a sport. My family loves to play Fresbe Football, its so much fun we play it with our church friends. Its good excerise and your sore after but its a fun workout.

speed walking for about 45 min

Bodyweight exercises, Pushups, crunches, dips, jumprope,etc..

Taking long walks

walking, sit ups, push ups, jumping jacks

speed walking

buy yoga tapes for at home