During a four-hour grading session, he completed a range of exercises including 100 press ups, star jumps, sit ups and squat thrusts at Dartford's Combat Camp UK gym.
His mother, Kelly, 27, said today:
We are really chuffed with him. It was hard work, particularly as he's so young and so small, but he's thrilled at what he's achieved and he just hammered it.
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