The skinny on hula hooping for fitness
http://www.ehow.com/how_4739594_hula-hoop-fitness.html With a regular kids hula hoop you can burn 200 calories in 30 minutes of hooping (continuous). With a weighted fitness hoop you can burn 400 calories in 30 minutes according to my web searches. This is good news, I LOVE HULA HOOPING!