Action Songs and Finger Plays really fascinate the little ones. When they were babies, my kids loved finger play rhymes like "Round and round the Garden" or "This little Piggy". They still love them but now that they're a little bit older (a toddler and a preschooler) , they like a little bit more action ie full body action!
Recently we sound such a song which captivated them. They loved it so much. Its called Copy Me! by the Tweenies. I hope the link works. I am sure your little ones will love it as mine did.
You can join them in the actions too, especially if you need a little bit of aerobic exercises. Hahaha. Or you can be creative and come up with your own actions. Enjoy!