BBC Sportolympics

For a lift to be successful, the athlete must support the weight above their head, with the arms straight.

They must be in complete control of the weight, so the body should be motionless.

Three referees judge weightlifting, and a majority verdict is accepted as official.

A good lift is signalled by flashing a white light, and an illegal one by a red light, although the decision can be overturned by a jury.

If two lifters finish the competition with the same total, then the one with the lower body weight is declared the winner.

The weight of an athlete's first lift determines their place in the starting order. If they choose to go for a light weight, they will go earlier in the order.