A video has emerged online in which former two-time world champion boxer Amir Khan punches out eight candles in one go without touching them.

The video has since gone viral, but has sparked a debate whether it is a real testament to his speed and ability, or fake and just another marketing trick created by RDX boxing company.

Khan blows out eight candles with one knockout punch at the photoshoot where he was announced as RDX's new brand ambassador.