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.
More top news
A combination of two drugs used for different illnesses could help combat Inflammatory Bowel Disease.
Thursday afternoon's weather for the east of the region
Thursday afternoon's forecast for the west of the region