Two little boys are punching, kicking and tacking each other in a cage. No, it's not an underground phenomenon. It's the growing sport of mixed martial arts.
ESPN the Magazine reports there are currently 3.2 million kids under the age of 13 taking part in MMA schools.
Kyra Phillips talked to one mom, Bernadette Thone, who lets her son take part in one of these leagues.
After watching the video and hearing from her, would you let your kid participate in the sport? Tweet @KyraHLN with the #RaisingAmerica hashtag or leave your thoughts on Facebook.com.
Watch Raising America every week day at 12 p.m. ET on HLN.
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