Heat risks add to challenges for Tokyo's pandemic-hit Olympics

People rest inside a cooling tent during the beach volleyball test event for the Tokyo Olympics

Tokyo has been notorious for its stifling summer for years

Searing heat, dripping humidity, and face masks: it's going to be a sweaty Tokyo Olympics and while coronavirus measures are top priority, heatstroke remains a serious risk, experts warn.

- 'Not possible to eliminate risk' - A report published in late May by the British Association for Sustainable Sport (BASIS) warned "intense heat and high levels of humidity are a threat to athletes at the 2021 Tokyo Olympics".