Newshour - Tokyo Olympics: Is a 'bouncy' track the reason so many records have been broken? - ÃÛÑ¿´«Ã½ Sounds

Newshour - Tokyo Olympics: Is a 'bouncy' track the reason so many records have been broken? - ÃÛÑ¿´«Ã½ Sounds
Tokyo Olympics: Is a 'bouncy' track the reason so many records have been broken?
'The bottom layer provides shock absorption, the top part provides the push'