Another option is to recruit your child into working out with you. Have him do some yoga or Pilates with you. You may also consider indoor gyms like the YMCA or Little Gym. If you're still looking for an activity, encourage your child to help you clean up the house. Offer an allowance as an incentive. You won't believe how fast money will get them moving. Although it may seem like a challenge, there are plenty of physical activities your children can do indoors. The trick is to put an end to the vegging and couch potato behavior that may have gone on far too long.