The best way to keep your kids active: Be active yourself. Institute daily walks or bike rides during family fun time.
Set a good example for your kids by getting off the couch and being active. Parents who watch a lot of TV are more likely to have kids who do too. Little ones like to get involved with whatever Mom or Dad is doing. Pop in your favorite workout DVD and let your tots join in. You can even buy workout programs that are made for kids and parents to do together. If your children are older, center family time around physical activities, like shooting hoops or going for a bike ride or daily after-dinner walk.