Kim Un Guk produced a huge performance to win the gold medal the men's 62 kg class at the London Olympics.

The 23-year-old broke the world record with his 327 kg total, which was made up of a 153 kg snatch (an Olympic record) and a 174kg clean and jerk. The London crowd couldn't get enough of the cheerful Guk, who beamed a huge smile before each lift and celebrated enthusiastically when he did well.

Here he is at work on his way to winning Olympic gold!