266K views · 468 shares | Sporty sisters Maria and Valery Bystritskii may look innocent - but they're actually boy-beating cage fighters. The pair, aged just 11 and 10, enjoy gymnastics, painting and skiing like normal kids, but can also punch, grapple and submit opponents using slick mixed-martial arts manoeuvres | Kick-Ass Kids | Facebook
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266K views · 468 shares | Sporty sisters Maria and Valery Bystritski…
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