How old should you stop running? If you're Hidekichi Miyazaki, then probably never. He's 105-years-old, and he completed the 100-metre sprint in 42.22 seconds, setting a new Guinness World Record while at it.

Hidekichi Miyazaki has once again broken his own record for Oldest competitive sprinter after running in the 100m at the Kyoto Masters Athletics Autumn Competition in Kyoto, Japan.

Miyazaki was born on 22 September 1910 and has just celebrated his 105th birthday.