. >> reporter: the results are validation for hoop nautica owner, gabriella redding. >> most people are hula hooping. i've lost 70 pounds. >> it incorporates dance moves on every part of the body. still -- >> i would say you first start seeing your weight loss in your waist. >> and it's not just for girls? >> definitely not just for girls. >> reporter: but it does take practice. in santa monica, sandra hughes, wjz eyewitness news. >> i'm just impressed that they can talk and do interviews as they hula hoop. that's amazing. >>> as always, check with your doctor before starting any new exercise program, even this exercise program, kai, with the hula hoop. >> mine is called walking. >> and talking. we did can -- we can do that at the same time. >>> still ahead on wjz's eyewitness news. >> what could have made this 14- year-old snap and beat his grandmother with a hammer? what the teenager told police about the violence that happened inside this house. and why he's now charged as an adult. ,,,,,,,,,,,,,,,,,,,, >>> coming up at 6:00. developing a health scare from william donald schaefer. >>