South African athlete Luvo Manyonga specialises in long jump. He's an Olympic silver medallist and a world champion. But an addiction to methamphetamine meant his life on and off the field came close to irreversible ruin.

South African athlete Luvo Manyonga specialises in long jump. He's an Olympic silver medallist and a world champion. But an addiction to methamphetamine meant his life on and off the field came close to irreversible ruin.